Answer:
B
Explanation:
A hypothesis in the scientific method is a testable prediction about the relationship between variables, which must be falsifiable and is not a statement of fact. It can be supported by evidence but is never proven absolutely correct, as future research may reveal new findings. Option (b) is the correct answer.
In the context of the scientific method, a hypothesis makes a prediction that can be tested (option b). It is an assertion of a relationship between two or more variables, designed to be falsifiable, meaning that it can potentially be proven false through research and experimentation. For instance, the hypothesis "Increased solar radiation increases the rate of plant growth" suggests a testable relationship that can be investigated through experiments. If results show no connection or a negative effect of solar radiation on plant growth, the hypothesis would be disproven.
A hypothesis is not a statement of fact; rather, it's a proposed explanation for a phenomenon. Unlike mathematical proofs, scientific hypotheses can be supported by experimental evidence, but they are never considered absolutely correct, as future research may provide new evidence. Multiple hypotheses can be proposed for a given scenario, and predictions can be made in the format of "If... then..." statements to guide the testing process.
which phrase describes a scientific theory
What is the paragraph?
In humid subtropical climates, _____.
summers are hot with less rainfall than in the winter
winters are cold with more snow than rain
summers are hot with more rainfall than in the winter
there are no freezing temperatures or frost conditions
Answer:
D
Explanation:
In the rainforest, which is a humid subtropical climate, winter is non-existent because of how hot it is.
A forest ecosystem experiences a wildfire that completely destroys one tree species. Which of these is the MOST likely effect on the ecosystem?
A - An Increase in available water
B - An Increase in population density
C - A decrease in the amount of sunlight
D - A decrease in the number of animal species
(This is Apex)
Answer:
A decrease in the number of animal species
Explanation:
because it is burning an entire tree species, animals that relied on that tree to live whether it be for living or eating reasons, wont have that source available to them. They would either slowly die out or leave to a habitat they could live in. Therefore, there would be a decrease in animal species.
hope this helps :)
A forest ecosystem experiences a wildfire that completely destroys one tree species. A decrease in the number of animal species is the most likely effect on the ecosystem.
What are the effects of wildfire?Definition: Natural or artificial disaster that is an unpredictable fire caused in the forest area. It can last anywhere between hours to days. The average duration of wildfire is 76 days according to reports.
The balance of the ecosystem is disturbed.Huge loss of terrestrial life.Forest is the home of wild animals and this wildfire can possibly disturb the habitat of the animals.This can eventually lead to a decrease and extinction of the animal species.Hence, option D is the right answer.
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A factory is emitting large amounts of CFCs into the atmosphere. How might this affect people?
Answer:
increase in the rate of skin cancer
Emission of large amounts of CFCs from a factory can harm the ozone layer, allowing more harmful UV radiation to reach Earth, leading to health issues like skin cancer and impacting our climate.
Explanation:A factory emitting large amounts of CFCs or chlorofluorocarbons, into the atmosphere can have significant impacts on both our environment and on health. CFCs, found in items like refrigerants and aerosols, are greenhouse gases that can cause damage to the Earth's protective ozone layer.
Through a chemical reaction triggered by UV light, CFCs decompose to release chlorine atoms, which then react with ozone molecules in the stratosphere, resulting in the depletion of ozone. This phenomenon, known as the 'ozone hole', allows more harmful ultraviolet radiation from the Sun to reach the Earth's surface.
Ozone depletion has been linked to numerous environmental and health issues, such as skin cancers and cataracts in humans, and negative effects on crops and marine life. Moreover, CFCs also contribute to global warming due to their heat-trapping capabilities, leading to complex and potentially catastrophic changes in our climate. Therefore, efforts are globally undertaken to reduce the use of CFCs and protect our planet.
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What type of organism utilizes photosynthesis to produce food?
A. Heterotrophs B. Frogs C. Autotrophs D. Sharks
Answer:
Autotrophs
Explanation:
Autotrophs.
I think this is it.
I hope this helps. Good luck
What’s the frequency of rr genotype
The frequency of the "A" allele. Answer: Since q = 0.6, and p + q = 1, then p = 0.4; the frequency of A is by definition equal to p, so the answer is 40%. The frequencies of the genotypes "AA" and "Aa." Answer: The frequency of AA is equal to p2, and the frequency of Aa is equal to 2pq
Choose all the answers that apply.
The greenhouse effect is:
slowly increasing global temperature
caused when atmospheric gases trap heat
melting the polar ice caps
slowly increasing sea levels
increasing because of carbon dioxide emissions
increase because of carbon
Answer:
A, C, D
Explanation:
What is the main steps of translation
Answer:
The steps in translation are:
The ribosome binds to mRNA at a specific area. The ribosome starts matching tRNA anticodon sequences to the mRNA codon sequence. Each time a new tRNA comes into the ribosome, the amino acid that it was carrying gets added to the elongating polypeptide chain. The ribosome continues until it hits a stop sequence, then it releases the polypeptide and the mRNA. The polypeptide forms into its native shape and starts acting as a functional protein in the cell.Explanation:
Explanation: There are three main steps
1. Initiation
2.Elongation
3.Termination
astralia is surrounded by water with climate change it is at risk of?
Answer:
As earth’s temperatures increase with climate change, the polar ice caps melt and the sea levels rise, leaving islands like Australia at risk of flooding and partial, permanent underwater submersion.
why can an inexhaustible resource also be considered a renewable resource?
Answer:
Explanation:
If it is inexhaustible it means that there is so much of it that we can never use it all. Some people would call the atmosphere inexhaustible. That might be a dangerous assumption, but it and water are the only things that I can think of that are close to being inexhaustible.
You don't have to set aside grain fields to grow water and air.
black fur genotype or phenotype
Answer:
Phenotype
Explanation:
Genotype would be something like homozygous recessive, heterozygous dominant, HH, Hh, hh (etc). It describes the genetical pattern in offspring.
Phenotype is the physical description, such as black fur, brown fur, long ears, short ears, indigo petals, white petals, (etc).
The _____ gland regulates the rate of body metabolism. thyroid hypothalamus parathyroid pancreas
Answer:
The thyroid gland regulates the rate of the body metabolism
Answer:
Thyroid
Explanation:
The thyroid gland releases triiodothyronine and thyroxine hormones that regulate the metabolic rate of the body. These thyroid hormones do not have specific target organs. These hormones stimulate the body cells to increase the rate of cellular respiration and thereby to increase the rate of breakdown of glucose to release energy.
The energy released is used for various functions and growth and development by cells. Hence, the thyroid gland regulates the metabolic rate by increasing the rate of cellular respiration.
Please help I honestly think it’s between nucleic acids and proteins someone explain I’ll try to put lots of points and I’ll also like your answer and mark it best. Please answer if you are 100% sure
Answer: nucleic acids
Nucleic acids have information-carrying molecules of the cell, they determine the traits of an organism.
Answer:
proteins
Explanation:
because proteins is responsible for genes
Energy is measured in
Answer:
It is measured in Joule
Explanation:
Energy Units and Conversions. 1 Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power from a current of 1 Ampere flowing through 1 Volt. 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour.
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Reproductive Isolation Reproductive isolation is classified as whether it occurs before or after fertilization. is related to geography or anatomy.
Answer:
occurs before or after fertilization.
Explanation:
The answer on USATestprep
Reproductive isolation is the phenomenon which is classified as whether it occurs before or after fertilization.
What is Reproductive isolation?The mechanisms of the phenomenon of reproductive isolation are a collection of all the evolutionary mechanisms, behaviors as well as the physiological processes which are very critical for speciation. They prevent the members of different species from producing new and better adapted offspring, or ensure that any of the produced offspring are sterile. These barriers maintain the integrity of a species through the reduction of gene flow between related species in an ecosystem.
Scientists generally classify the phenomenon of reproductive isolation in two groups which include, prezygotic barriers and postzygotic barriers. A zygote is a fertilized egg, which is the first cell of the development of an organism which reproduces through sexual mode of reproduction.
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The process of cellular respiration
A. Occurs only in animals.
B. Breaks down food molecules to release stored energy.
C. Must occur before plants are able to carry out photosynthesis.
D. Is performed only by organisms that are incapable of photosynthesis.
Answer:Breaks down food molecules to release stored energy
Explanation:
Cellular respiration, which breaks down food molecules to release stored energy, occurs in all organisms, including plants, animals, fungi, and certain microorganisms; it does not need to take place before photosynthesis and is not limited to organisms that can't photosynthesize.
Explanation:The correct answer to this question is: B. Breaks down food molecules to release stored energy.
Cellular respiration is an important process that occurs in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. It is not exclusive to animals as it is also performed by plants, fungi and many microorganisms.
Cellular respiration occurs independently of photosynthesis which is performed only by plants, certain algae, and some bacteria. The order of occurrence is not that respiration must take place before photosynthesis; both processes are concurrent. Also, while it's true that organisms incapable of photosynthesis, like animals, rely on cellular respiration, it's not accurate to say that only such organisms perform cellular respiration as plants do both.
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Which of the following can be explained with science? Plant growth Career options Moral value Meaning of life
Answer:
The answer is A. Plant growth, Plant growth is the only thing that can actually be tested and scientificly measured,
a) Why are some molecules polar and others nonpolar? (1 point)
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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Questions 6-10 relate to the Digging the Fossil Record on the Smithsonian website. Each complete and correctly answered question is worth 2 points.
6. Where is your virtual dinosaur dig happening? Describe the conditions at the dig site.
7. Look at the pictures. What are the different tools used at a dig site and what are their uses?
8. What kind of animal did you uncover in your dinosaur dig?
9. How are fossils protected for transport?
10. After the dig, give the following information: When did it live and where was this specimen found?
Answer: 6. Where is your virtual dinosaur dig happening? Describe the conditions at the dig site.
It’s happening at the Judith River Formation in Montana. There are hills that are covered with rocks and gravel.
7. Look at the pictures. What are the different tools used at a dig site and what are their uses?
Hammers, the end of a broom, brushes, and pickaxes.
8. What kind of animal did you uncover in your dinosaur dig?
A ceratopsian dinosaur.
9. How are fossils protected for transport?
They are encased in field jackets made from burlap and plaster to protect them during transport.
10. After the dig, give the following information: When did it live and where was this specimen found?
This dinosaur lived in the Cretaceous Period, it was found in the Upper Cretaceous rocks of the Judith River Formation.
A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria?
A) The relative frequency of the mutation will increase as time passes.
B) Because the mutation has changed the DNA of the bacteria, a new species will be formed.
C) Because the mutation is abnormal, the mutation will become more rare with every passing generation.
D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.
A-The relative frequency of the mutation will increase as time passes.
Answer:
A) The relative frequency of the mutation will increase as time passes.
Explanation:
Charles Darwin, after returning from his trip around the world aboard the Beagle, started to raise domestic animals. He noted that, many times, some breeders crossed animals with important characteristics among themselves. This meant that those characteristics were passed on from generation to generation. This method is known as artificial selection.
as a result of artificial selection, individuals with a specific trait would survive and end up passing that trait on to their descendants. With this, we can conclude that in the case of the bacteria mentioned above, the mutation that originated a characteristic favorable to its existence will pass on to its descendants, so the relative frequency of the mutation will increase with time.
when placed into a solution that is 30% water an 70% salt, what would happen to a cell that has a 70% water concentraion?
Answer:
how
Explanation:
In a hypertonic solution like 70% salt, a cell with 70% water concentration would lose water due to osmosis. This would cause the cell to shrink or crenate.
Explanation:When a cell that has a 70% water concentration is placed into a solution that is 70% salt and 30% water, the surrounding solution is considered hypertonic relative to the cell's interior. This means the environment outside the cell has a higher solute (salt) concentration than inside the cell. According to the principle of osmosis, water will naturally move from an area of lower solute concentration to an area of higher solute concentration in attempt to reach equilibrium. Consequently, water will move out of the cell and into the solution, causing the cell to lose water and shrink or crenate.
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does evolution have any plan or it is random?
Answer:
evolution is random
Explanation:
there is no explination for evolution over time things find there own way to be better
Answer:
Evolution is random
What are three events that may lead to speciation
Allopatric Speciation (alios— other, patria— native land): In this type of species formation, a part of the population becomes geographically isolated from the main population. ...
• Sympatric Speciation (sym— together, patria— native land): ...
• Parapatric Speciation: ...
• Quantum Speciation:
You are digging a hole in your backyard when you see a piece of fossilized bone in the dirt. How could you prove the age of the fossil? Design a procedure for determining the relative and absolute age of the bone.
Pls don't use copy and paste this from other sites or i will get an f for copyright
and brainiest if i get a good grade on it.
Answer: ok first you have to look at the clues or hints of what the given fossil and how many layers or solid Rock on it, now that is seen to go from the youngest to oldest age, we now know that you can design a procedure like a "Rock identification" based on what type of or rock it is for example lime stone this would tell you how far it goes back in time. Just identify the tpe of rock it is and then youll know that its that deep.
I hope this helps just wrote this from scratch for you :)
When you overfill your glass with water and there’s a slight bulge at the top of the glass, you are witnessing the _____ property of water. Adhesive, cohesive, expansive.
Answer:
adhesive
Explanation:
the water sticks to the glass because of surface tension
Answer: Adhesive
Because the water is sticking with the other water in the cup. The water in the cup is making the rest of the water get pulled down by the tension.
A single strand of DNA contains the following nine nucleotides in this order: ACT TAT GGA. What sequence of bases will be present on the complementary strand of DNA?
Answer:
The complementary DNA strand is as follows:
TGA ATA CCT
Hope this helps you out!
OCEAN ACIDIFICATION! Need help answering thes qustions....
1. What is the THREAT to CORAL?
2. Whats the cause of threat to Coral?
3. Potential Solution?
Threats to coral reefs include climate change, pollution, overfishing, coastal development, destructive fishing practices, and tourism pressure.
Solutions involve reducing emissions, creating marine protected areas, promoting sustainable fishing, improving water quality, responsible tourism, coral restoration, international cooperation, research, public awareness, and policy enforcement.
1. Threats to Coral:
Coral reefs face several threats, and some of the most significant ones include:
a. Climate Change: Rising sea temperatures and ocean acidification due to increased carbon dioxide levels in the atmosphere can cause coral bleaching, which weakens and kills corals.b. Pollution: Pollution from agricultural runoff, sewage, and coastal development can introduce excess nutrients and contaminants into the water, leading to harmful algal blooms and reduced water quality.c. Overfishing: Overfishing can disrupt the delicate balance of coral reef ecosystems by removing key species that help maintain coral health, such as herbivorous fish that graze on algae.d. Coastal Development: Construction along coastlines can result in sediment runoff, increased pollution, and habitat destruction, all of which harm coral reefs.e. Destructive Fishing Practices: Practices like dynamite fishing and using cyanide to capture fish can physically damage coral reefs.f. Tourism: Unregulated tourism and improper snorkeling or diving practices can lead to physical damage to coral reefs, including trampling and anchor damage.2. Causes of Threat to Coral:
The primary causes of these threats to coral reefs include:
a. Greenhouse Gas Emissions: The release of greenhouse gases like carbon dioxide from human activities, particularly the burning of fossil fuels, is a major driver of climate change, leading to coral bleaching and ocean acidification.b. Industrial and Agricultural Runoff: Runoff from agriculture and industry introduces excess nutrients, such as nitrogen and phosphorus, into coastal waters, leading to algal overgrowth that can smother corals.c. Overfishing: Overfishing occurs due to high demand for seafood and inadequate fisheries management, leading to the depletion of important herbivorous fish species.d. Coastal Development: Urbanization and coastal development result in deforestation, pollution, and sedimentation, all of which harm coral reefs.e. Destructive Fishing Practices: Illegal fishing methods, like dynamite and cyanide fishing, are used to capture fish more easily, but they cause direct physical damage to coral reefs.f. Tourism Pressure: Coral reefs attract tourists, but uncontrolled tourism can lead to physical damage, pollution, and the introduction of invasive species.3. Potential Solutions to Protect Coral Reefs:
a. Climate Change Mitigation: Reduce greenhouse gas emissions through measures such as transitioning to clean energy sources, promoting energy efficiency, and reforestation to mitigate the effects of climate change on coral reefs.b. Marine Protected Areas (MPAs): Establish and enforce protected marine areas to restrict fishing and other activities in sensitive coral reef ecosystems, allowing them to recover.c. Sustainable Fishing Practices: Implement and enforce sustainable fishing practices, such as size limits, catch quotas, and gear restrictions, to protect key species and maintain a healthy balance within the ecosystem.d. Water Quality Management: Improve water quality through better sewage treatment, reducing agricultural runoff, and controlling industrial pollution to limit nutrient input and sedimentation.e. Responsible Tourism: Promote responsible tourism by educating visitors about proper snorkeling and diving practices, enforcing no-anchor zones, and limiting tourist access to sensitive areas.f. Coral Restoration: Invest in coral restoration efforts, such as coral nurseries and transplantation programs, to rebuild damaged reefs and enhance their resilience.g. International Cooperation: Collaborate on a global scale to address coral reef threats, as many reefs are located in international waters, and their conservation requires coordinated efforts among nations.h. Research and Monitoring: Support scientific research and monitoring to better understand coral reef ecosystems, track changes, and develop targeted conservation strategies.i. Public Awareness: Raise public awareness about the importance of coral reefs and their role in supporting marine biodiversity and fisheries to garner support for conservation efforts.j. Policy and Regulation: Enact and enforce laws and regulations at local, national, and international levels to protect coral reefs and their associated ecosystems.The complete question is here:
1. What is the THREAT to CORAL?
2. What is the cause of threat to Coral?
3. Potential Solution?
Ammonite is a species of shellfish that is used as an index fossil. It has a distinct spiral shell. Which statement most likely explains why other species of shellfish that existed around the same period of time are not considered index fossils?
A.
Other shellfish did not contain the carbon-14 isotope.
B.
Other shellfish were much smaller in size than ammonites.
C.
Other shellfish were not as widespread as ammonites.
D.
Other shellfish did not have a rigid external body, like ammonites.Match each process to where it occurs in the carbon cycle.
Answer:
The answer is C. Other shellfish were not as widespread as ammonites.
Explanation:
Ammonites is a group of marine animals that no longer exist due to extinction. They are classified to phylum Mollusca. Ammonites are identified by their external coiled shells that are preserved as fossils. They are used as Index fossils because the rocks having ammonites fossils can be linked to a specific geologic time zone. Ammonites were present in abundance and had wide geographical distribution making them excellent candidate of index fossils.
microfiber in clothing is also a form of plastic. true or false
This Is true because it’s an artificial fiber it’s not natural.
Microfiber used in clothing is a form of plastic, typically made from petrochemicals like polyester and nylon. These materials are used for their specific characteristics and durability. Despite their benefits, there are environmental concerns regarding microfiber, as they can contribute to plastic pollution.
Explanation:The statement that microfiber in clothing is also a form of plastic is indeed true. Microfiber is a synthetic fiber, finer than one denier or decitex/thread, which is smaller than a strand of silk. They are commonly made from petrochemicals like polyester and nylon, both of which are forms of plastic and not biodegradable. These materials are chosen for their specific characteristics such as softness, toughness, water repellency, and filtering capabilities. However, there are environmental issues connected to microfiber, as washing clothes made of this material can contribute to plastic pollution in water.
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A salt solution has a concentration of 200 g/L. How many grams of salt are contained in 500 mL of this solution?
Answer:
100g/500mL
Explanation:
1ml is .001 of 1 L
this means that per one ml, there is 200g*.001, or .2g/mL, or simply .2g.
now we multiply this by 500, for the 500ml we are calculating. 500*.2=100.
We can also skip these steps and take 200g*.5L, as 500mL is 1/2 liter. We get the same outcome, so the answer is 100g
The concentration of the salt solution can be calculated using the formula concentration = mass of solute / volume of solution. By substituting the given values, we find that there are 100 grams of salt contained in 500 mL of the solution.
Explanation:The concentration of a salt solution is given by the formula:
concentration = mass of solute / volume of solution
In this case, the concentration is 200 g/L and the volume of the solution is 500 mL. We need to convert the volume from mL to L:
500 mL = 500 / 1000 = 0.5 L.
Substituting the values into the formula:
200 g/L = mass of solute / 0.5 L.
Multiplying both sides of the equation by 0.5:
mass of solute = 200 g/L * 0.5 L = 100 g.
Therefore, there are 100 grams of salt contained in 500 mL of this solution.
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