Answer:
some molecules are polar because they have an unbalanced electrical charge because of their bent shape or they don't share electrons equally between their atoms
while other molecules are nonpolar because they have a balanced electrical charge cause they do not have a bent shape and share electrons equally between their atoms.
Explanation:
some are polar while others are nonpolar because of the way their electical charge is arranaged within themselves.
Polar molecules occur when there is an electro negativity difference between the bonded atoms. Non-polar molecules occur when electrons are shared equal between atoms of a diatomic molecule.
What are polar molecules?Polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.
Polarity results from the uneven partial charge distribution between various atoms in a compound. Atoms, such as nitrogen, oxygen, and halogens, that are more electronegative have a tendency to have partial negative charges.
The purpose of a polarity test to ensure that all single pole devices (fuses, switches and circuit breakers) are connected in the phase conductor only.
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In general, when a substance changes from a solid to a liquid, A. the density of the substance remains the same. B. the substance no longer has density since density is a property only solids have. C. the density of the substance increases. D. the density of the substance decreases.
Answer:
D
Explanation:
The density of a substance is dependent on mass and volume of the substance, so a change in state of matter affect the change in volume which affect the density of the substance
Answer:
The answer on Study Island is...
D. The density of the substance decreases
Explanation:
I did it on Study Island and I got it correct. I hope my answer can help those who need it :)
what happens when too much water enters an animal cell via osmosis
Answer: The cell explodes
Explanation:
The cell has to maintain equilibrum. For that to happen, it must have been overriden. The cell will end up dying.
Which of the following physical features is most likely a result of inheritance?
A.
A diseased plant has fewer branches and leaves than a healthy plant.
B.
A man has very large muscles and his son is thin with no large, developed muscles.
C.
A plant in a nutrient-rich area is taller than a plant that is in a nutrient-deprived area.
D.
A human newborn has type O blood, and its mother also has type O blood.
D because just like you can inherit your hair and eye color from your parents so can you inherit your parents blood type
Answer:
D. A human newborn has type O blood, and its mother also has type O blood.
Explanation:
Heredity, or genetic inheritance, is a biological mechanism for transmitting characteristics from one individual to another (from parent to child specifically). The "bridge" that transmits such information is the gene, so everything happens in a genetic process.
Heredity is one of the foundations of genetics, a branch of biology that studies how biological inheritance occurs. This is how certain characteristics that differentiate a group are transmitted from one individual to another. A typical example of this phenomenon are the characteristics you have in common with your parents, such as eye color, hair texture, blood type and others.
Describe an environmental factor that could influence natural selection and decrease genetic diversity and pick a specific example to illustrate your point
Answer:
Environmental factors model organisms' phenotypes. Natural selection benefits certain traits over others to increase organisms' fitness and adaptation. Oceanographic barriers and streams model the dolphins' skulls.
Explanation:
A change in the environment can influence natural selection and decrease genetic diversity. An example of this is the evolution of the peppered moth in England during the Industrial Revolution.
Explanation:One environmental factor that could influence natural selection and decrease genetic diversity is a change in the environment. When the environment changes, populations can undergo directional selection, which selects for phenotypes at one end of the spectrum of existing variation. An example of this is the evolution of the peppered moth in eighteenth- and nineteenth-century England. Prior to the Industrial Revolution, the light-colored moths blended in with the light-colored trees and lichens in their environment. However, as soot from factories darkened the trees, the darker melanic form of the moth had a higher survival rate in habitats affected by air pollution.
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Arrange the unstable isotopes in decreasing order based on the length of their half-life. carbon-14 (5.73 × 103 years) argon-39 (2.69 × 102 years) hafnium-182 (9 × 106 years) krypton-81 (2.29 × 105 years) calcium-41 (1.03 × 105 years) iron-60 (1.5 × 106 years)
Answer:
a) argon-39 (2.69 × 102 years)
b) carbon-14 (5.73 × 103 years)
c) calcium-41 (1.03 × 105 years)
d) krypton-81 (2.29 × 105 years)
e) iron-60 (1.5 × 106 years)
f) hafnium-182 (9 × 106 years)
Explanation:
The most unstable isotopes would be the one which will have small half life. A half life depicts the time period in which a radioactive isotope would reduce to a quantity just half of its originals quantity. Thus isotopes with high half life period will take much longer time to reduce to their original quantity. Thus on arranging the given isotopes in decreasing order of stability, the following series is obtained –
a) argon-39 (2.69 × 102 years)
b) carbon-14 (5.73 × 103 years)
c) calcium-41 (1.03 × 105 years)
d) krypton-81 (2.29 × 105 years)
e) iron-60 (1.5 × 106 years)
f) hafnium-182 (9 × 106 years)
Which feature forms at a divergent boundary? rift valley island arc subduction zone collision zone
Rift valley is the feature forms at a divergent boundary,A divergent plate boundary often forms a mountain chain known as a ridge.
What is Rift valley?A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift. Rifts are formed as a result of the pulling apart of the lithosphere due to extensional tectonics. The linear depression may subsequently be further deepened by the forces of erosion.Rift valley is the feature forms at a divergent boundary,A divergent plate boundary often forms a mountain chain known as a ridge.
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At the end of each bronchiole is an (1) air sac (2) pleura (3) bronchus (4) larynx
At the end of each bronchiole is an air sac (a) made from small clumps of alveoli.
Hope this helps.
- Danielle xo
Answer:
1) air sac
Explanation:
The smallest branches are called bronchioles and at the end of these are your air sacs.
Hot, arid climates, such as deserts, are prone to erosion by
answer: Desertification
explanation: sand storms and other arid wheather activity are causes of erosion
Answer: Wind erosion
Explanation:
Wind erosion is the cause of desertification in a region. As the wind takes away the fertile top layer of soil. It makes the soil unfertile as a result of this the plants does not grow well. This directly affects the water cycle of the region hence the region exhibit hot and dry climate.
What type of blood disorder can be caused by an infection?
hemophilia
sepsis
anemia
lymphoma
Possibly try anemia Many other acute infections, either viral or bacterial can cause anemia
Your answer should be sepsis
One organ system may be composed of many ________.
Answer:
Organs -usa testprep
Explanation:
Answer:
the answer is organs
Explanation:
i have usatestprep
What uses technology to replace one or more genes in an organism?
A. genetic technology
B. genetic manufacturing
C. genetic engineering
D. genetic production
Final answer:
The technique that uses technology to replace one or more genes in an organism is known as genetic engineering. It employs recombinant DNA technology to create desirable traits in organisms, leading to the production of GMOs.
Explanation:
Genetic Engineering
The use of technology to replace one or more genes in an organism is called genetic engineering. This process involves the alteration of an organism's genotype using recombinant DNA technology to modify the organism's DNA to achieve desirable traits. Genetic engineering is a key component of biotechnology, which changes the genetic makeup of living things to produce useful products. Genetically modified organisms (GMOs), such as herbicide-resistant soybeans and borer-resistant corn, have become common in various industries, including agriculture and food production.
Explain intelligence.
A. the ability to respond to the environment
B. the ability to solve problems and make good decisions
C. the ability to learn from others
D. the ability to be creative
B. The ability to respond to the environment good decision
Answer:
B. the ability to solve problems and make good decisions
Explanation:
Intelligence is attained in many different ways through many influences, both social and personal.
What starts the light reaction of photosynthesis?
Answer:
light strikes the chloroplast.
Explanation:
The first stage of photosynthesis is the light dependent reactions. These reactions take place on the thylakoid membrane inside the chloroplast. During this stage light energy is converted to ATP (chemical energy) and NADPH (reducing power).
What's evaluated at the G2 checkpoint in mitosis and meiosis?
A. That there are nutrients available for cell growth
B. That growth hormones are aligned and ready to be deployed to the new cells
C. That none of the DNA is damaged in the cell
D. That the cell is large enough to support division
Answer:
The correct answer is option C. That none of the DNA is damaged in the cells.
Explanation:
Control mechanisms in cells during cell division which ensure the proper division of the cells are called cell cycle checkpoints. There are three checkpoints in the cell cycle in meiosis or mitosis-
G1 checkpoint assesses the integrity of DNA. There is intermediate S checkpoint between G1 checkpoint and G2 checkpoint checks if DNA replication is completed or not.
G2 checkpoint checks or assesses the proper chromosome duplication and that none of the DNA is damaged in the cell.
M checkpoint assesses the attachment of every kinetochore to a spindle fiber.
the liver of dog has been found to have a higher than normal cell death because of dna is damaged. what part of the cell failed to do its job of protecting the dna of cell
Answer:
The Nucleus.
Explanation:
The nucleus is surrounded by a membrane called the nuclear envelope, which protects the DNA.
Answer:
Nuclear envelop
Explanation:
Nuclear envelop is the double membrane structure that makes the boundary of the nucleus. It serves to protect the DNA from the toxins, wastes and other harmful substances produced during metabolic reactions of the cell occurring in cytoplasm.
If the nuclear envelope does not protect DNA, DNA could be damaged by free radicals or toxins. A cell with damaged DNA is subjected to death.
what are the main functions of the liver in a jaguar
Answer: performs most metabolic functions of the body
Explanation:
1.it produces proteins with the help of vitamin and therefore helps in blood clotting
2.it breaks down old and damaged blood cells
3.it causes break down of fats and produces energy which is utilized by the body hence it helps in fat metabolism
4.it produces bile and causes excretion of bilirubin ,cholesterol,hormones and drugs.
5.it metabolises proteins and carbohydrates
How a dog meets all charactistics in life
Answer:
by meeting new people
Explanation:
Answer:
B
Explanation:
How do human wingspans compare to albatross wingspans
Human wingspans are much smaller than those of albatross. That is, the ration of wingspan to height for humans is around 1.0, whereas for albatross it is closer to 3.0. ... Albatross fly thousands of miles each year. They use their long wings to soar on wind currents over the ocean.
An average human adult 'wingspan' measures around 2 meters, whereas the wingspan of the albatross, particularly the wandering albatross, can reach up to 3.7 meters - significantly larger. This reflects the different functions these 'wings' serve, with those of the albatross being specially adapted for long-distance flight.
Explanation:In comparing human wingspans to albatross wingspans, we find striking differences. The average human adult wingspan, that is, the distance from fingertip to fingertip with arms extended, usually measures around 2 meters (6 feet). In contrast, the wingspan of the albatross is considerably larger, with the wingspan of the wandering albatross - the record holder - reaching up to an impressive 3.7 meters (12.1 feet).
The differences in wingspan between humans and the albatross reflect the different roles and functions these 'wings' serve. For humans, our 'wings' or arms are used for manipulation and manual tasks, whereas the albatross uses its wings primarily for long-distance flight. The wings of the albatross are also intricately adapted for this function, with even the bird's flight muscles and skeletal structure playing major roles in facilitating efficient flight.
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A. primary succession after a controlled fire
B. primary succession after a volcanic eruption
C. secondary succession after a controlled fire
D. secondary succession after a volcanic eruption
primary succession after a volcanic eruption
Answer is B.
The picture shows primary succession after a volcanic eruption.
What is primary succession?A primary succession occurs when a freshly developed area is populated for the first time by a group of species or a community.Topsoil and organic materials are frequently scarce in this previously deserted, bleak environment. The pioneer species is the species that was the first to colonize an uninhabited area, and the pioneer community is the dominant community. Primary succession may occur, for example, following the eruption of volcanoes such as those on Hawaii's Big Island. New rock is produced as lava flows into the water.learn more about primary succession here:
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Lakes and ponds which have limestone or calcium carbonate are affected less by acid rain than those which have granite. This is because ?
Answer:
Limestone and Acid Rain. Carbon Dioxide-Bicarbonate-Carbonate Equilibrium ... The buffered water resists changes to pH from additional acid or base. ... Because surface waters are in equilibrium with atmospheric carbon dioxide there is ... The presence of limestone and other calcium carbonate rock in lakes and streams ...
Explanation:
Answer:
calcium carbonate solutions are basic and neutralize the acid rain.
Explanation:
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Julia demonstrated the formation of a type of rock. She mixed egg, salt, and herbs and cooked the mixture over a flame. The egg turned into an omelet. The formation of which type of rock did Julia demonstrate?
A.) Eroded rock
B.) Igneous rock
C.) Metamorphic rock
D.) Sedimentary rock
Answer: Option (C)
Explanation: Metamorphic rocks are those rocks that are formed when a pre-existing rock undergoes changes or metamorphism, due to the changing pressure and the temperature condition, and forms a new rock. For example, Quartzite, Marble, Schist and Gneiss. They are also known as the secondary rocks, as they are derived from the previous rock.
In the given condition, Julia mixes the egg with salt and herbs and cooked the mixture over a flame, this is compared to the changing pressure and temperature condition that rock undergoes, and that lead to the formation of her omelette, which is here compared to a metamorphic rock.
Thus, the correct answer is option (C).
Its C, just answering so the other guy can get brainliest <3
Why did the development of vascular systems help plants to move out?
A. It allowed them to become sporophytes
B. It made it possible to convert sunlight to glucose
C. It made it possible to move water within the plant structure
D. It allowed gametes to live longer without water supply
Answer:
It made it possible to move water within the plant structure
Explanation:
The development of vascular systems helped plants to move out because It made it possible to move water within the plant structure.
How vascular systems help plants to move out?
The plant vascular system is a complicated network of conducting tissues that interconnects all organs and transports water, minerals, nutrients, organic compounds, and various signaling molecules throughout the plant body. It is composed of two major tissues, xylem and phloem, that are differentiated from the procambium.
Vascular plants are successful due to better transportation for water, nutrients and reproduction. The xylem and phloem of the vascular bundles allow for distribution of water and food to all parts of the body. This structures allow vascular plants to colonize farther inland.
Vascular tissue allows a plant to exploit the moisture-holding capacity of soil to satisfy its water needs and also to grow stems to raise its leaves above the ground and its neighbors. Since access to light and moisture is critical for a plant to thrive and reproduce, vascularity has distinct competitive advantages.
The correct answer is option C.
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what are the advantages of classifying species according to their evolutionary relationships, instead of their physical similarities
Final answer:
Classifying species by evolutionary relationships provides a more accurate reflection of their shared ancestry and genetic heritage, which is essential for understanding the consequences of evolution and for updating classifications with new scientific data.
Explanation:
The advantages of classifying species according to their evolutionary relationships, rather than solely on physical similarities, are numerous. One key advantage is the ability to reflect the species' shared ancestry and evolutionary past. This phylogenetic classification offers a more accurate depiction of how species are related to one another and provides context for their physical and genetic traits. While physical traits can be misleading due to convergent evolution, where unrelated species independently evolve similar features, phylogenetic relationships are based on the genetic heritage that organisms share due to descent from a common ancestor.
Grabbing a warm coffee mug to warm your hands
Answer:
It is by conduction the heat passes from the cup to our hands.
Explanation:
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Earth’s outer core will not transmit S waves because it is made of _____.
liquids
nonmagnetic material
granodiorite
solids
Answer: Liquids
Explanation: S-waves are not transmitted through the liquid outer core. This produces a 'shadow zone' on certain parts of the Earth's surface where S-waves are not recorded.
Answer:
liquids
Explanation:
Seismic wave (also called S waves) is simply the name given to waves that travel internally across the planet or on its surface as a result of major events, such as earthquakes.
They can be classified into two groups, depending on the medium in which they are propagated. The volume waves that propagate inside the Earth and the surface waves, which as the name suggests, propagate on the surface. Each classification groups waves that have different shapes, speeds and natures.
The Earth's outer core does not transmit S waves because it is formed by iron and the material is in a liquid state.
S waves have a shear movement, which means that the soil is displaced perpendicular to the direction of propagation, and propagate only in solids, since fluids have no shear resistance. The animations below show how these waves are propagated.
List three ways in which mitosis and meiosis differ, and list two ways in which they're similar.
Mitosis;
- Divided from a somatic cell
- 2 daughter cells
- All daughter cells have 46 Chromosomes
Meiosis;
- Divided from a reproductive cell
- 4 daughter cells
- All daughter cells have 23 chromosomes
Some ways they're similar;
- Produce new cells
- Similar basic steps
- Start with a single parent cell
Mitosis and meiosis differ in the number of divisions, chromosome numbers, and genetic variation, while they are similar in terms of cellular processes and stages.
Explanation:Mitosis and meiosis differ in three main ways:
Number of divisions: Mitosis is a single division process that results in two identical daughter cells, while meiosis involves two divisions and produces four genetically different daughter cells.Chromosome number: Mitosis maintains the same number of chromosomes as the parent cell, whereas meiosis reduces the number of chromosomes by half, resulting in haploid daughter cells.Genetic variation: Mitosis produces genetically identical daughter cells, whereas meiosis generates genetic variation through recombination and crossing over.Similarities between mitosis and meiosis:
Cellular processes: Both mitosis and meiosis involve the division of cells.Stages: Both processes have similar stages, including prophase, metaphase, anaphase, and telophase.Learn more about Mitosis and Meiosis here:https://brainly.com/question/32989055
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Describe why an enzyme is specific.
Answer:Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. ... The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site. There are two theories explaining the enzyme-substrate interaction.
Explanation:
.
An enzyme has a specific shape for the substrate it’s meant to break down; it only fits that substrate to break it down into the final product. Ex. Lactase (Enzyme breaks down Lactose (substrate) into Glucose and Galactose.
Which global wind belt do we live in?
Okay, first of all, I don't know what "do we live in" means. I am guessing you're talking about the United States.
We live in the Prevailing Westerlies, which blow in the middle latitudes. Most of North America fits into this belt.
How do decomposers conserve mass?
A-They create new mass as old organisms die.
B-They recycle mass back into the ecosystem.
C-They destroy excess mass in the environment.
D-They concert mass into sunlight by photosynthesis.
B- They recycle mass back into the ecosystem
When decomposers eat off of dead plants and animals, they are recycling it and turning it into nutrients for other plants. It’s a continuous cycle that prevents the build up of waste.
Which of the following items transforms electrical energy into thermal energy? A. Watching your favorite TV show in the living room. B. A gas fireplace to keep you warm in the winter. C. Burning charcoal to cook a steak. D. A stove cooking a casserole.
Answer: i beleive it is D but read the expalantion
Explanation: B and C both use fossil fuels to creat heat. The stove creats heat using electrcity but not all stoves do use eltricity. A) the tv one is not made to creat heat but they do if you leave it on for a while. But i really think D is your best option or the one that makes sense.
I hope this helps you out a thank and a brainlist would be greatly appreciated.
Burning charcoal to cook a steak transforms electrical energy into thermal energy. Hence the correct option is C.
When charcoal burns, it undergoes a chemical reaction that releases heat, which in turn heats up the grill or cooking surface. This process transforms electrical energy (if the charcoal is ignited using an electric starter) or potential energy (if ignited manually) into thermal energy, which is used for cooking the steak.