If we did the paperclip activity with a cup of isopropyl alcohol instead of water, would you expect the cup to hold more or less paperclips? Explain your reasoning.

Answer:

D. Mutation and natural selection both cause changes in a population

Explanation:

I just took the test. Good luck! :)

The two evidences that supports the fact that species change due to certain genetic variations are that mutation and natural selection both cause changes in a population.

Natural selection is the postulation by Charles Darwin that organisms that are more adapted to their environment live longer and reproduce hence pass on their favorable traits to their offspring.

The two evidences that supports the fact that species change due to certain genetic variations are that mutation and natural selection both cause changes in a population.

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Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.

Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.

Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.

Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.

Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.

Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.

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Answer:

(4) As time increased, distance remained

the same

Explanation:

The graph shows that the student measures equal distance everyday from the bridge to the rock for 7 days.

Everyday has an equal distance measured by the student all through the week.

Let's say the point on the vertical axis which represents distance measured is about 1.5 meters. It means that, for day 1, he measures 1.5 meters, day 2, he measured 1.5 meters, by day 3 another 1.5 meters. Same he does for 7 days. For the first 3 days, he would have measured 1.5 m × 3 = 4.5 meters.

This means that, as time (days) increased, distance measured each day remains the same.

organisms such as deer, trout, and eagles obtain nitrogen from the nitrogen cycle through the food chain. Plants obtain nitrogen from the soil, and animals obtain nitrogen from plants or other animals. The nitrogen cycle converts N2 gas into more usable forms of nitrogen, which are absorbed by living things. Nitrogen is an essential nutrient for all living things and is a critical component of ecosystems.

Organisms such as deer, trout, and eagles obtain nitrogen from the nitrogen cycle. Nitrogen is an essential nutrient for plants, animals, and other living things. However, nitrogen cannot be directly used by most organisms because it is present in the atmosphere as a gas (N2), which is relatively inert and unreactive.

Therefore, organisms depend on the nitrogen cycle to convert N2 into more usable forms of nitrogen such as ammonia (NH3), nitrate (NO3-), and nitrite (NO2-).Nitrogen fixation is the process by which N2 is converted into ammonia (NH3) by nitrogen-fixing bacteria. These bacteria live in the soil, and some species live in the roots of certain plants such as legumes. When these bacteria fix nitrogen, they convert it into ammonia, which plants can absorb through their roots. Once the nitrogen is in the plant, it can be used to build proteins and other important molecules. When animals eat plants, they consume the nitrogen in the plant, and it becomes a part of their body.Ammonification is another process in the nitrogen cycle by which dead organisms and animal waste are decomposed by bacteria and fungi. During this process, organic nitrogen compounds are broken down into ammonia, which is released into the soil or water. This ammonia can then be absorbed by plants and incorporated into their tissues.

Nitrification is the process by which ammonia (NH3) is converted into nitrite (NO2-) and then into nitrate (NO3-) by nitrifying bacteria. Once nitrate is produced, it can be absorbed by plants and used to build proteins and other important molecules. When animals eat plants or other animals, they consume the nitrogen in their food, and it becomes a part of their body.Denitrification is the final process in the nitrogen cycle, where nitrate (NO3-) is converted back into N2 gas by denitrifying bacteria. This process releases nitrogen back into the atmosphere, where it can be used again by nitrogen-fixing bacteria to begin the cycle again.

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Answer:

People who have sickle cell disease inherit two faulty hemoglobin genes, called hemoglobin S — one from each parent. A person has sickle cell trait when the hemoglobin S gene is inherited from only one parent and a normal hemoglobin gene — hemoglobin A — is inherited from the other.

Runoff increases as more water is added from rainfall, tributaries, or groundwater seeping into the river. In general, as the flow rate increases, so does the width, depth, and velocity of the stream.

Water always flows downward, so in a perfect world a stream or river would flow in a straight line from its origin to the ocean. To increase stream flow and reduce flooding, we dug streams to create straight channels and "channelize" them to speed up the flow of water.

Stream flow is controlled by three inputs: surface runoff (from precipitation or meltwater), daylight water below the surface, and surface groundwater (spring water). Surface water and groundwater vary greatly during the wet season.

Rivers and streams deposit sediment where water flow slows down. In rivers, sedimentation occurs on the inner banks of river bends [where water flows more slowly], on the other hand, erosion occurs along the outside bank of the bend, where the flow of water is faster.

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Will the fossil record ever be complete?

Today, through over a century of study of both the Earth's surface and the completeness of the fossil record, paleontologists have been able to determine that while the record will never be complete and always has preservation biases, we often have more than enough evidence to draw strong evolutionary conclusions about ...

Answer & Explanation:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Pls, choose me as brainliest!

Protein is a major part of bones and muscles and an important component in blood, body cells, enzymes, and immune factors.

Proteins аre mаcromolecules composed of chаins of subunits cаlled аmino аcids. Аmino аcids аre simple subunits composed of cаrbon, oxygen, hydrogen, аnd nitrogen. Food sources of proteins include meаts, dаiry products, seаfood, аnd vаrious plаnt-bаsed foods, most notаbly soy.

Proteins provide four kilocаlories of energy per grаm; however, providing energy is not protein’s most importаnt function. Proteins provide structure to bones, muscles, аnd skin аnd plаy а role in conducting most of the chemicаl reаctions thаt tаke plаce in the body. Scientists estimаte thаt greаter thаn one-hundred thousаnd different proteins exist within the humаn body. The genetic codes in DNА аre bаsicаlly protein recipes thаt determine the order in which 20 different аmino аcids аre bound together to mаke thousаnds of specific proteins.

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The term Sociable and Outgoing is option C: Synonyms

People with sociable features have traits that support healthy interpersonal interactions. Many people naturally exhibit sociable qualities like an upbeat and cheerful attitude, self-control, adaptability, integrity, and teamwork.

A few typical definitions of social include amiable, cordial, friendly, and gracious. While all of these phrases refer to anything that is "markedly pleasant and easy in social contact," the adjective "sociable" denotes a sincere desire for other people's company.

Note that a person who actively engages in social interaction and looks for opportunities to mingle is referred to be outgoing. Extroverted is a similar term. Social, sociable, or gregarious are common adjectives used to characterize outgoing people. The two words above are close in meaning.

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Answer: B

Explanation:

Prokaryotic cells: cell wall, cell membrane, nucleus, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Eukaryotic cells: cell wall, cell membrane, nucleus, mitochondria, membrane-bound organelles, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Viruses: capsid, requires host cell, may cause disease, antibiotics may be used to treat infection, vaccines are used to prevent infection, living thing, DNA, and RNA.

Viruses are small infectious particles that propagate solely inside living cells of other organisms. Their structure comprises genetic material bound by a protein coat called a capsid, with some viruses displaying an additional lipid envelope surrounding the capsid.

Since viruses cannot self-reproduce, host cells are crucial to their replication and production.

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Answer:

During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA, and conducts other "normal" cell functions. Interphase was formerly called the resting phase.

Explanation:

Since it's most of the topic of concern that currently exists on the subject of the use and production of plastic products are addressed in the text, it can be affirmed that the setence constructed is correct.

Answer:

True

Explanation:

No need to skip

Answer:

by working out

Explanation:

Answer:

The event that is most likely to be the last to occur in a population of mice experiencing logistic growth is the point at which the population reaches its carrying capacity, or the maximum number of individuals that the environment can support. This is because the rate of population growth tends to decrease as the population approaches its carrying capacity, as resources become increasingly scarce and competition for resources intensifies. Ultimately, the population will stabilize at or near its carrying capacity, at which point the rate of population growth will be minimal or zero.

Competition for mates is exclusively intraspecific (Option D).

In biology, competition refers to the fight between different organisms by limited resources.

In conclusion, competition for mates is exclusively intraspecific (Option D).

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Answer:

Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.

Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.

Organs or skeletal components of animals and organisms that, by virtue of their similarity, suggest a connection to a common ancestor are known as homologous structures. These structures need not all look the same or serve the same purpose.

The forelimbs of vertebrates are a common illustration of homologous structures. The forelimbs of four-legged vertebrates like dogs and crocodiles, the arms of primates, the front flippers of whales.

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Answer:

32 teeth

Explanation:

8 incisors

4 canines, also called cuspids

8 premolars, also called bicuspids

12 molars, including 4 wisdom teeth.

Answer:

Models show that producers start on the bottom of the food chain, then the levels of consumers are next, and the predator finishes it. Energy moves through the organisms in a food chain as they are consumed. For example, as a consumer eats a producer, the energy from that producer is now in the consumer.

The flow of energy in ecosystems is unidirectional, meaning that it flows from producers to consumers to decomposers.

The flow of energy in ecosystems is unidirectional because each trophic level (a group of organisms that occupy the same position in a food chain) loses some of the energy it receives to the environment as heat. This means that the amount of energy available to each successive trophic level is always less than the amount of energy available to the trophic level below it.

As a result, the amount of energy that is available to the top trophic levels is very small. This is why there are typically fewer organisms at the top of the food chain than there are at the bottom.

The flow of energy in ecosystems is an important part of the cycling of matter in the environment. The energy that is released by decomposers is used by producers to create new organic matter, which is then eaten by consumers, and so on. This cycle ensures that the energy in ecosystems is constantly being recycled.

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Answer:

1. Protect your skin from the sun every day.

2. Apply self-tanner rather than get a tan.

3. If you smoke, stop.

4. Avoid repetitive facial expressions.

5. Eat a healthy, well-balanced diet.

6. Drink less alcohol.

7. Exercise most days of the week.

8. Cleanse your skin gently

Explanation:

Answer:

Eating healthy,and staying away from a lot of tanning beds

Explanation:

Unless an unbalanced force is acting on an object, Newton's first law states that it will stay at rest or move in a straight line at a constant speed.

Newton's first law states that any object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the application of an external force. Inertia is the propensity to resist changes when things are moving.

According to Newton's First Law of Physics, moving objects continue to move in the same direction unless they are affected by an imbalanced force. Things moving include among others, the US dollar, rates, inflation, and oil.

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A surgical connection that connects two hollow viscera is leaking luminal fluids. Patients may develop a fever, an abscess, or septicemia if the luminal contents spill into the abdominal region.

Septicemia, often known as blood sickness, is an illness that develops when bacteria spread throughout the circulation. The germs are often bacteria, but they can also be fungi or viruses.

Septicemia can be successfully treated with antibiotics if detected in its early stages. Developing more precise ways for making a prompt diagnosis of the condition is the aim of study. Permanent organ damage is still possible, even with therapy.

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Answer:

the senator

Explanation:

he makes the bills

Answer:

D, bottom feeding fish.

Explanation:

:)