Answer:
The ways in which the prevailing winds affect precipitation in a region are:
Prevailing winds influence wind movement from large bodies of water. Prevailing winds cause huge air masses, both warm and cool, to move. Prevailing winds controls the amount of water vapor in the air masses.Explanation:
The prevailing winds set a pattern in the direction of the winds on the planet, following a fixed direction, to become one of the determining factors of climate change on the planet.
There are three types of prevailing winds:
The trade winds. The winds of the West. The polar winds, or from the east.The presence of predominant winds and their interaction with the surface, on land and in water, allows the displacement of air masses and pressure changes that determine rainfall in certain regions.
Factors such as the movement from large bodies of water, cause huge air masses -both warm and cool-to move and the controls the amount of water vapor in the air masses make it possible to trigger thermal changes in the air that lead to regional precipitation.
The prevailing winds produce that masses of air -charged with water vapor - rise and cool, which leads to the condensation of steam and, consequently, precipitations.
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Answer:
Correct answers are: C,D,E
Explanation:
Explain why scientists must use only certain enzymes when
inserting or removing a defective gene from a cell
Certain enzymes will splice out only the target gene and different enzymes will cut DNA at different locations.
Explanation:
Removing or inserting defective genes and replacing the defective one with the normal one is one of the genetic engineering technique that helps in curing the disease and improving the health status.
When inserting or removing any defective gene, we have to be careful in using the enzymes that would help in splicing out only the targeted gene. If wrong enzymes are used there are chances that it may cut out the normal gene.
Initially, the gene that has to be modified or removed or inserted is chosen and then it is isolated in a matching vector. Finally, it is inserted or removed from the host cell.
which term refers to a group of interacting populations of two or more species occupying the same area
A community is a group of interacting populations of two or more species that share the same habitat. This term is significant in the study of ecosystems and biodiversity, which includes looking into how these species interact and compete for resources in their environment.
The term that refers to a group of interacting populations of two or more species occupying the same area is called a community. A population consists of all the individual organisms of the same species that live in a certain area. However, populations rarely live in isolation; they usually share a habitat with other species, forming a community. The interactions within a community are crucial for regulating population growth and abundance, and ecologists study these interactions to better understand ecosystems. Moreover, the number of species in a community and their relative abundance contribute to the species diversity of the area.
3. How can overgrazing reverse the succession of a grassland ecosystem? –
Over grazing can easily reverse the grassland succession.
Explanation:An ecological succession is defined as the process of nature undertaking a barren land that was previously not suitable for any life. This process requires time. Here the lichens and fungi first breaks the rocks and produces some humus after death that can be used by other plants whose seeds are brought by wind or birds and they germinate to form the new ecosystem.
Now overgrazing kills the newly formed plants. And the humus content also gets reduced because of the unavailability of the organic matter over the place. So overgrazing will kill these plants and again reverse back the succession to previous forms.
Which phrase describes a population?
an area characterized by a group of plants and animals
a nonliving factor in an organism’s environment
all the organisms that interact in a lake
all the gray squirrels that live in a forest
Answer: all the gray squirrels that live in a forest
Explanation:
A population refers to the total number of organisms of the same species living and breeding together in a given area.
Thus, since the gray squirrels all belong to the same specie and live in a given area called forest - population is best described by the phrase "all the gray squirrels that live in a forest"
Answer:
all the gray squirrels that live in a forest
Explanation:
I took the test :)
A complete copy of a person's genes is
found in each of a person's
(1) body cells
(2) traits
3) alleles
4) molecules
Answer:
(2)traits
Explanation:
The formation of ova, or female reproductive cells, occurs when diploid germ cells undergo meiosis. In female swamp wallabies (Wallabia bicolor), diploid germ cells contain 101010 chromosomes.
At the beginning of meiosis I, a female wallaby germ cells contains
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
101010 homologous pairs of chromosomes comprising a total of 202020 chromatids
(Choice B)
B
555 homologous pairs of chromosomes comprising a total of 202020 chromatids
(Choice C)
C
101010 homologous pairs of chromosomes comprising a total of 101010 chromatids
(Choice D)
D
555 homologous pairs of chromosomes comprising a total of 101010 chromatids
At the beginning of meiosis I, a female wallaby's germ cell contains 10 homologous pairs of chromosomes and a total of 20 chromatids, making option A the correct choice.
The formation of ova, or female reproductive cells, in female swamp wallabies (Wallabia bicolor), involves diploid germ cells with 10 chromosomes each. At the start of meiosis I, these germ cells will have 10 homologous pairs of chromosomes. Since each chromosome is replicated before meiosis begins, this will result in 20 chromatids in total. Therefore, the correct answer to the question is that a female wallaby germ cell contains 10 homologous pairs of chromosomes comprising a total of 20 chromatids at the beginning of meiosis I. This is option (Choice A).
Fill in the blank.
Offspring from parents with different forms of the same trait are called ________
WILL GIVE BRAINIEST
It the wheat plants died, the population of mice would most likely
Decrease
Increase
Remain the same
HELP ASAP
If the wheat plants died, it would most likely have decrease. Hence the correct option is A.
Wheat is a common food source for mice, and its availability plays a crucial role in supporting their population. If the wheat plants died and were no longer available as a food source, the mice would likely experience a decrease in their population. The decrease could occur due to a lack of food resources, leading to competition, starvation, and reduced reproductive success.
Food scarcity: With the absence of wheat, mice would struggle to find an alternative food source that could sustain their population adequately. The reduced availability of food would lead to increased competition among mice, making it harder for them to find enough nutrition to survive.
Reduced reproductive success: Inadequate food supply can have a direct impact on the reproductive success of mice. When food is scarce, mice often experience decreased fertility rates, lower survival rates of offspring, or even delayed sexual maturity. These factors can result in a decline in the overall population growth rate.
Hence the correct option is A.
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The taxon that consists of one or more genera (plural form of genus) is the
The taxon that consists of one or more genera (plural form of genus) is the family.
Explanation:
According to the modern taxonomic classification system, there are eight major levels of division – Domain, Kingdom, Phyllum, Class, Order, Family, Genus, and Species.
Family is the taxonomic order which comes next to the Order and before Genus and consists of one or more genus or genera but sharing a common attributes. The ancestral origin of the family members remains the same.
The kinds of families depend upon the Kingdoms and Orders in the taxonomy. Carl Linnaeus termed family as familia in his classification and divided the major plant groups or families as trees, palms, ferns etc.
Among the family of carnivores in animals, there are many genera like Canidae, Felidae Ursidae etc.
Answer:
Family
Explanation:
For each of the following examples, select the type of measurement error that best describes what went wrong. Barney measured a tree branch to be 25 cm in diameter. He wrote “25 mm” in his results. Camille was excited when the new instrument showed up at the lab. She opened it up and started using it right away. Neville pulled out the bathroom scale to measure the mass of the chemicals he needed.
Different types of measurement error is described below
Explanation:
1.Barney measured a tree branch which is 25cm in diameter.But in his results he has written 25mm which is wrong.As 25cm and 25mm is not same.25cmm=250mm.As we knwo that 1cm=10mm so 25cmm =25x10mm which is 250mm.
2.Camille was excited when new instrument is showed up at the lab.This is wrong because new instrument is first set up after set up it is tested then we can start work in this instrument.
3. Neville pulled out the bathroom scale to measure the mass of the chemicals he needed it is correct Bathroom scale is used to measure the mass of the chemicals.
The question involved measuring errors in three different cases. Barney's mistake represents a recording error since he used the wrong unit in his recording. Camille's error is classed as an instrument error due to her not calibrating or properly understanding the new instrument. Neville made an instrumentation error by using an unsuitable instrument for the task.
Explanation:In each of these situations, measurement errors have occurred due to various reasons.
1. Barney's case involves a recording error. He used the wrong unit (mm instead of cm) in his recording. To avoid such errors, always double-check the unit of measurement being used.
2. Camille experienced an instrument error. She used a new instrument without calibration or familiarizing herself with it. It is always crucial to ensure that measuring instruments are properly calibrated and the user is familiar with its handling.
In the case of Neville, he used an inappropriate instrument i.e., a bathroom scale, to measure the mass of his chemicals. This could lead to substantial instrumentation errors as bathroom scales are designed to measure much larger weights and may not provide accurate readings for small quantities. Always use the most suitable tool for the task.
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Bacteria can be classified by shape. For the following bacteria species, give their basic bacterial shape.
Streptococcus pyogenes:____________________ Paenibacillus polymyxa:_____________________ Aquaspirillum bengal:______________________
Streptococcus pyrogenes : Round (or) Ovoid
Paenibaccilus polymyxa:
Aquaspirillum bengal: Helical
Explanation:
Streptococcus pyogenes are gram positive, Round shaped, Anaerobic growth bacteria, Non-motile bacteria.Aquaspirillum bengal is helical in shape with its composition of deoxyribonucleic acid and cytosine. It is Gram negative and chemo-organotrophic. It is also motile with the help of flagella.Paenibacillus polymyxa is also known as Bacillus polymyxa which is capable of fixing nitrogen. It is found in soil, plant tissues and marine sediments. It has a major role in forest ecosystems and potential future applications as a biofertilizer and biocontrol agent in agriculture.Final answer:
Streptococcus pyogenes is coccus-shaped, Paenibacillus polymyxa is bacillus-shaped, and Aquaspirillum bengal is spiral-shaped. There are multiple arrangements for coccus and bacillus shapes, and spiral shapes can vary, including vibrio, spirillum, and spirochete. Bacterial sizes are measured in micrometers (μm).
Explanation:
Bacteria can indeed be classified by their basic shapes, which include coccus, bacillus, and spiral.
For the species mentioned:
Streptococcus pyogenes: This species has a coccus shape, which is spherical. The prefix 'strepto-' suggests that these bacteria are often found in chains.Paenibacillus polymyxa: This species is bacillus in shape, which means it is rod-shaped.Aquaspirillum bengal: This species exhibits a spiral shape. Specifically, it belongs to the spirilla class, known for its spiral or corkscrew appearance.Additionally, cocci can have several distinct arrangements based on planes of division, including diplococcus, streptococcus, tetrad, sarcina, and staphylococcus. Bacillus shapes can also be found as single bacillus, streptobacillus, or coccobacillus. The spiral form includes variations such as vibrio, spirillum, and spirochete. Finally, the size of these bacteria is typically measured in micrometers (μm), which is one millionth of a meter (10-6).
Amino acids bond to each other using hydrogen bonds.
Answer:
Very true. Thanks for sharing.
Organisms use nitrogen in which one of the following ways?
A)Certain bacteria living in the roots of plants convert nitrogen to a form plants
can use, and animals obtain their nitrogen by eating those plants.
B)Plants absorb nitrogen from the air in photosynthesis and add it to the sugars
they produce
C)Certain bacteria convert nitrogen to a form animals can use, Wd animals obtain
their nitrogen by inhaling this nitrogen.
D)Animals absorb nitrogen from the air they breathe and incorporate it into their
tissues
Answer:
I think it's option A
Explanation:
Nitrogen fixing bacteria such as rhizobium, which lives in the root nodules of leguminous plants, help convert inert nitrogen to ammonia. Once the nitrogen has been fixed in the soil, the plants can absorb nitrogenous compounds through their roots. The process of absorption is known as assimilation.
Besides, nitrogen can only be fixed in two ways; atmospheric fixation (involving lightening) and industrial fixation (manufacturing ammonia under high temperature and pressure). I hope this helps
Nitrogen is primarily obtained by organisms via nitrogen fixation carried out by bacteria. These bacteria convert atmospheric nitrogen into usable form for plants, and when animals consume these plants, they attain their required nitrogen.
Explanation:Organisms, both plant and animal, obtain nitrogen primarily through the process of nitrogen fixation which is carried out by certain bacteria. The most accurate among the options given is A) Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen by eating those plants. This process involves bacteria transforming atmospheric nitrogen into a usable form within the soil. This nitrogen is then absorbed by plants. Animals, in turn, obtain their nitrogen by consuming these plants.
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each box inside a punnett square represents one ?
Answer: The each box of punnet square represents the possible outcome of the genotype of the offspring's.
Explanation: In each box there is result of cross between maternal and paternal alleles. It represents the possibility of genotype of offspring's.
Answer: one of the possible genotypes of the offsprings.
Explanation: A punnett square is a diagram that is used to determine the probability that an offspring of a cross between two organisms will have a particular genotype. It shows the possible genotypes of a cross between two organisms. In writing a punnett square, the genotypes of the parents are written one on the top of the square and the other on the left side of the square. The genotypes of the offsprings are written in the boxes.
(04.04 LC)
Match the term with its description.
Match Term Definition
Anaerobic respiration A) The production of energy without the presence of oxygen
Pyruvate B) The chemical breakdown of a substance
Aerobic respiration C) The breakdown of food to create energy in the presence of oxygen
Fermentation D) An organic molecule that occurs as an intermediate in many metabolic processes
Answer:
A) The production of energy without the presence of oxygen - Anaerobic respiration
B) The chemical breakdown of a substance - Fermentation
C) The breakdown of food to create energy in the presence of oxygen - Aerobic respiration
D) An organic molecule that occurs as an intermediate in many metabolic processes - Pyruvate
Explanation:
A) Anaerobic respiration is a type of cellular energy production that occurs in the absence of oxygen. it is much less efficient than aerobic respiration (see question C). In cellular respiration, cells produce ATP, which is the "currency" of energy in the cell, by breaking down glucose. ATP is required to carry out the normal functions of a cell.
As it is much less efficient than aerobic respiration, it produces much less ATP. However, when there is no oxygen, it is the only choice. An example is when muscle cells are working very hard and use up all the oxygen in the tissue. To keep producing some energy, they undergo anaerobic respiration, which only produces 2 molecules of ATP for every molecule of glucose.
B) In respiration, Fermentation is a pathway of breaking down glucose into chemical energy that occurs in the absence of oxygen. Anaerobic respiration can lead to two types of fermentation, lactic acid fermentation (described above) and ethanol fermentation which is another type of anaerobic respiration in which fungi (such as yeast) break down glucose into ethanol, producing 2 molecules of ATP carbon dioxide as a by-product. This is how we make bread and beer!
C) Aerobic respiration is cellular respiration in the presence of oxygen. It creates a net gain of 36 molecules of ATP, compared to the 2 ATPs created without oxygen. This is because in aerobic respiration, the oxygen acts as a final electron acceptor for the electron transport chain. In its absence the electron transport chain cannot proceed. The electron transport chain is how cells generate most of their chemical energy.
D) Pyruvate is an important molecule in the process of respiration. Both aerobic and anaerobic respiration begin with the same process, glycolysis. Glycolysis is the process by which 1 molecule of glucose is broken down into two molecules of pyruvate - a metabolic intermediate. This releases 2 molecules of ATP. In the presence of oxygen, pyruvate is oxidised and enters the Krebs cycle, which makes a series of compounds that donate electrons to the electron transport chain, which produces extra ATPs through oxidative phosphorylation.
In the absence of oxygen, pyruvate is converted either to lactic acid or ethanol by fermentation
Answer:
ExplanatA) The production of energy without the presence of oxygen - Anaerobic respiration
B) The chemical breakdown of a substance - Fermentation
C) The breakdown of food to create energy in the presence of oxygen - Aerobic respiration
D) An organic molecule that occurs as an intermediate in many metabolic processes - Pyruvate
Explanation:
A) Anaerobic respiration is a type of cellular energy production that occurs in the absence of oxygen. it is much less efficient than aerobic respiration (see question C). In cellular respiration, cells produce ATP, which is the "currency" of energy in the cell, by breaking down glucose. ATP is required to carry out the normal functions of a cell.
As it is much less efficient than aerobic respiration, it produces much less ATP. However, when there is no oxygen, it is the only choice. An example is when muscle cells are working very hard and use up all the oxygen in the tissue. To keep producing some energy, they undergo anaerobic respiration, which only produces 2 molecules of ATP for every molecule of glucose.
B) In respiration, Fermentation is a pathway of breaking down glucose into chemical energy that occurs in the absence of oxygen. Anaerobic respiration can lead to two types of fermentation, lactic acid fermentation (described above) and ethanol fermentation which is another type of anaerobic respiration in which fungi (such as yeast) break down glucose into ethanol, producing 2 molecules of ATP carbon dioxide as a by-product. This is how we make bread and beer!
C) Aerobic respiration is cellular respiration in the presence of oxygen. It creates a net gain of 36 molecules of ATP, compared to the 2 ATPs created without oxygen. This is because in aerobic respiration, the oxygen acts as a final electron acceptor for the electron transport chain. In its absence the electron transport chain cannot proceed. The electron transport chain is how cells generate most of their chemical energy.
D) Pyruvate is an important molecule in the process of respiration. Both aerobic and anaerobic respiration begin with the same process, glycolysis. Glycolysis is the process by which 1 molecule of glucose is broken down into two molecules of pyruvate - a metabolic intermediate. This releases 2 molecules of ATP. In the presence of oxygen, pyruvate is oxidised and enters the Krebs cycle, which makes a series of compounds that donate electrons to the electron transport chain, which produces extra ATPs through oxidative phosphorylation.
In the absence of oxygen, pyruvate is converted either to lactic acid or ethanol by fermentationion:
Tropical rainforests are sometimes cleared to make crops. These crops include plants that produce vegetable oils, such as palm oil. However, deforestation leads to great loss of biodiversity. A group of concerned scientists devised two possible solutions to the problem. The best solution will spare additional rainforests from clear-cutting and still provide local communities with a source of income.
Solution 1: Businesses buy oils only from certified deforestation-free areas. Oil producers use better management practices on non-forest land to increase crop yields.
Solution 2: Businesses switch to other types of vegetable oils that do not cause deforestation. For example, plants, such as corn and sunflowers, are grown in a grassland ecosystem.
Identify the best solution, and explain why the solution meets the criteria of the problem.
Answer:
Solution 2: Businesses switch to other types of vegetable oils that do not cause deforestation. For example, plants, such as corn and sunflowers, are grown in a grassland ecosystem.
Explanation:
The second solution suggested will create a win-win palliative for the locals and the forest they are cutting down.
Let us analyze this solution;
Problem ; Deforestation owing to growing of crops
Growing of corn and sunflowers does not affect the forest in an area. To grow these crop species, clear cutting might not necessarily be carried out. The vegetable oil will provide the farmers with an alternate source of income. The forest will then be preserved.The first solution takes the business away from the local area and the farmers will lose.
2.
Sex cells are produced during the process of (2 points)
synthesis
replication
mitosis
meiosis
As the human population grows, some minerals in everyday products could become scarce. Which of the following is the best way to address this problem?
A. Move human communities to uninhabited areas.
B. Explore uses of more plentiful minerals.
C. Use more energy to locate existing minerals.
D. Construct more and larger-sized landfills.
Answer:
B. Explore uses of more plentiful minerals
Explanation:
The correct option is B.
Why is exploring minerals important?Exploration is an important step in finding minerals so they can be potentially mined. Our demand for minerals is increasing, for example, we need more copper to build renewable energy assets such as wind turbines. This demand is helping drive an increase in exploration across the state.
What are the main uses of minerals?They are used in the manufacture of concrete, bricks, and pipes and in building houses and roads. Industrial minerals are non–metallic minerals used in a range of industrial applications including the manufacture of chemicals, glass, fertilizers, and fillers in pharmaceuticals, plastics, and paper.
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State the general relationship between exercise and heart rate in humans
Answer:
The more you exercise (or just move around) the faster your heart rates gets.
The general relationship between exercise and heart rate in humans is that heart rate increases with the intensity of physical activity. The more intense the exercise, the faster the heart beats to supply more oxygen-rich blood to the muscles.
Explanation:The general relationship between exercise and heart rate in humans is that heart rate typically increases with physical activity. The heart needs to pump more blood, and thus oxygen, to the muscles when you're engaging in exercise. So, the more intense the activity, the faster the heart beats, causing a rise in your heart rate.
For example, if a person is at rest, their heart may beat around 60 to 100 times a minute. However, with vigorous physical activity, the heart rate can go up to 160 to 200 beats per minute. Remember, these numbers can vary based on factors like age, physical fitness level, and individual health conditions.
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What is the function of the immune system?
Answer: it helps with saving you form getting sick !!
Explanation:
Why do animals migrate?
Answer:
Some animals travel relatively short distances to find food or more favorable living or breeding conditions. Most animals migrate to breed. The Atlantic Salmon begins life in a river and migrates downstream to the ocean.
Answer:
Why do animals migrate?
There are so many reasons why animals migrate which include;
search for food
to avoid overcrowding
to avoid competition
for better environment or comfortability
Explanation:
if zebra mussels were introduced to a new lake, what would be the most likely result?
Answer:
C
Explanation:
The mussel is in a new lake, therefore he has new food to eat
A magnesium atom undergoes a chemical reaction in which it becomes an ion with charge 2+. This means that the atom has
changed by
A.
losing two electrons, two protons, and two neutrons
B.
gaining two protons
C.
losing two electrons
D.
losing two electrons and two neutrons
E. losing two neutrons and gaining two protons
Reset
Submit
Answer:
c
Explanation:
A magnesium atom becomes a 2+ ion by losing two electrons, maintaining the same number of protons and neutrons. This process is due to magnesium's desire to attain a stable state.
Explanation:When a magnesium atom becomes an ion with a 2+ charge, it does so by losing two electrons. The number of protons and neutrons in the atom remains the same. Therefore, the correct answer to the question 'A magnesium atom undergoes a chemical reaction in which it becomes an ion with charge 2+. This means the atom has changed by?' is option C: losing two electrons. Magnesium ion formation occurs because magnesium wants to achieve a stable configuration, and it does so by losing the two electrons in its outermost energy shell.
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Materials move down a concentration gradient . Passive or active ?
Answer:
passive
Explanation:
active is when materials move up a concentration gradient
Materials moving down a concentration gradient is indicative of passive transport, a natural process where substances travel from areas of higher concentration to areas of lower concentration, requiring no energy. Active transport, on the other hand, moves substances against their concentration gradient by expending energy.
Explanation:The movement of materials down a concentration gradient denotes passive transport. This is a naturally occurring phenomenon where substances move from an area of higher concentration to an area of lower concentration, a process referred to as diffusion. It does not require the cell to expend energy to conduct this movement. If comparing active to passive transport, active transport involves the movement of substances against their concentration gradient, requiring energy typically provided by ATP.
An example of facilitated diffusion, a form of passive transport, involves glucose transporters moving glucose into cells without the cell having to expend energy. Active transport, on the other hand, funds the movement of substances such as sodium and potassium ions against their concentration gradients, utilizing energy in the process.
The concentration gradient, thus, lends heavily to passive transport, but it can also be overcome with the use of energy in active transport. Hence, passive and active transport differ in energy requirements and the direction of flow concerning the substance's concentration gradient.
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Which characteristic is distinctive of hominids?
A.bipedal
B. jointed legs
C.backbone
Answer:
a. bipedal
Explanation:
The direction in which heat flows between two bodies depend on their
Depends upon the temperature of neighboring elements
Explanation:
The equations of heat flow in solids does not depend on which way flows up. The direction of heat flow in a small element within a solid depends on the temperature of its neighboring elements. It is due to the fact that only neighboring element can decide that heat can pass from the system or into the system.Heat normally flows from hot substance to cold substance.Which statement most completely describes the primary role of the cell in a multicellular organism?
A. The combination of chemical functions and genetic material enable the cell and the organism to live, grow, and reproduce.
B. The collection of organelles interact with the environment to protect against environmental contaminants.
C. The internal structures provide shape and support to a variety of living organisms—both unicellular and multicellular.
D. They help scientists classify all living organisms by the types of cells they are made of.
Answer:
A
Explanation:
Since we know that the multicellular organism has the basic roles of living,growing and reproducing its genetic matieral enables it to do each of the following.
Water is referred to as a polar molecule.
Describe the characteristics of a polar molecule.
Answer:
Characteristics of polar molecule
- they should have opposite charge
- they should have same dipole moment value
- they should have electronegativity different
Explanation:
Polar molecule is characterized by an uneven distribution of the electrons that form the covalent bonds between each atoms in the molecule
Polar molecules has a net dipole as a result of opposing charges from polar bonds, since water has slightly positively charged side and a slightly negatively charged side. This makes it a polar molecule
A polar molecule is a molecule in which the distribution of electrons is uneven, creating a positive and negative end that attract each other. Water is a polar molecule due to its bent shape and electronegativity difference between oxygen and hydrogen. Examples of polar molecules include ammonia and hydrogen fluoride.
Explanation:A polar molecule is a molecule in which the distribution of electrons is uneven, resulting in a positive end and a negative end. This uneven distribution of charge creates a molecular dipole, where the positive and negative ends attract each other. The polarity of a molecule depends on its shape and the electronegativity of its atoms.
Water is a polar molecule due to its bent shape and the electronegativity difference between oxygen and hydrogen. The oxygen atom is more electronegative than the hydrogen atoms, causing the electrons to spend more time around the oxygen atom, giving it a partial negative charge, and leaving the hydrogen atoms with partial positive charges.
Other examples of polar molecules include ammonia (NH3) and hydrogen fluoride (HF).
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In which part of the atmosphere does the temperature decrease as the altitude increases?
A) mesosphere only
B) mesosphere and troposphere
C) stratosphere and mesosphere
D) thermosphere and troposphere
Answer:
The correct option is A) mesosphere only
Explanation:
The solar radiation is not absorbed by the mesosphere of the Earth. Hence, the temperature of the mesosphere decreases as the altitude increases. At the mesopause, the temperature begins to increase with altitude, and this trend continues in the thermosphere.
On the other hand, in the stratosphere, temperature increases with altitude. Hence, other options are not correct.
Which of the following is an example of an alternative energy source?
O A. Coal
OB. Oil
O C. Natural gas
O D. Wind
The one that is an example of alternative energy source is wind. The correct option is D.
What is an alternative source of energy?Alternative energy is referred to as the energy that is not being derived from fossil fuels and thus emits little to no greenhouse gases such as carbon dioxide (CO2).
This means that alternative energy does not contribute to the greenhouse effect, which causes climate change.
They are self-sustaining and natural, with a low or zero carbon footprint. Wind power, solar power, bioenergy, and hydroelectric, including tidal energy, are examples of renewable energy sources.
Creating energy from fossil fuels that emits no greenhouse gases and reduces some types of air pollution. Diversifying energy supplies and decreasing reliance on imported fuels
Thus, the correct option is D.
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