Commercial fishing in certain parts of the ocean decreases the number of small fish. As a result, large fish and sharks...
are negatively affected because there is less oxygen in the water.


are positively affected because the small fish polluted the water.


are negatively affected because they feed on the small fish.


are positively affected because there is more space.

Answer:

The best answer choices for question: Which of the following are limitations of HMO plans, would be: B: Limited number of healthcare providers, and C: Limited coverage for healthcare services.

Explanation:

An HMO, is known as a Health Maintenance Organization and it is the basic coverage plan offered by insurance companies to people to ensure their healthcare coverage. There are several benefits to this system of healthcare, including lesser deductibles, However, one issue with them is that those covered require the attendance of a PCP, or primary care physician for most of their needs, and they cannot ask for specialists unless authorized by the PCP. Also, they have lesser access to certain services, unless they have out-of-pocket expenses covered. This is why the answer is B.

Answer: Tundra biome

Tundra biome is the coldest biome of the world. It is dominated by snow. The white wolf is also called as polar wolf and artic wolf. This animal species is native of Artic tundra biome located in the North America. These animals are adapted to survive in harsh winter conditions. They exhibit adaptations like small ears to minimize the surface area to volume ratio (less surface area will prevent the loss of heat), they have thick fur which is highly insulating, fur on the paws to provide them insulation and increase grip in otherwise slippery surface of ice, and thick layer of body fat keeps the body insulated against harsh external winter environment.  

Answer:

Explanation:    

The common name in biology can be defined as the name of a taxon or organism that is based upon the common language. The common name may vary depending upon the local language and country. It is the frequently used name.

Among the options given, following are correct:

1. Multiple organisms can be called by the same common name.: For example, various species of wolves can be commonly called as wolf.

2. Multiple common names can be applied to one organism.:  For example, common name of rice can be paddy, sake and others.

3. Common names do not always translate accurately: Due to diversity of languages in the world the common names do not always translate accurately.

Common names for organisms can be ambiguous and are not used universally. Instead, the binomial naming system provides a unique and universally recognized name for every organism, like Homo sapiens for humans. This avoids confusion and facilitates global scientific communication.

In relation to common names:

The binomial naming system, introduced by Carl Linnaeus, helps provide a unique and universally recognized name to every organism, which includes the genus and species name, such as Homosapiens for humans. This system avoids the confusion that can arise from the use of common names, which can be variable and not specific to one organism. Common names can vary across different cultures and languages, which highlights the importance of the scientific naming system in global scientific communication.

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history of building a power plant-In June 27, 1954. The world's first power plant was opened. In Obninsk, outside of Moscow. In 1868 a hydro electric power station was designed and built by Lord Armstrong at Crag side, England. It used water from lakes on his estate to power Siemens dynamos. The electricity supplied power to lights, heating, produced hot water, ran an elevator as well as labor-saving devices and farm buildings. Then in 1870 generators were invented to produce power on a commercial scale for industries. But then in 1882 in Appleton Wisconsin, US DC power, 12.5 kW. This was the first Edison hydroelectric station. It powered Van Dipole's early electric trolleys later in 1886.Then in 1882 in New York City - Edison Illuminating Company builds New York's first power plant at the Pearl Street

im working on the same thing lol thats all i got atm:) hope this helps

As organisms use certain traits more frequently, each organism evolves overtime is used to describes our current understanding about how species evolve over time.

Most evolutionary biologists distinguish one species from another based on reproductivity: members of different species either won't or can't mate with one another, or, if they do, the resulting offspring are often sterile, unviable.

Most people recognize biodiversity by species—a group of individual living organisms that can interbreed. Examples of species include blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria that can't even be seen by the eye.

Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects.

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The answer is earthquake.

Answer:

avalanche

Explanation:

i took a test and the correct answer is avalanche

Answer:

Metamorphic rock is correct

Explanation:

Answer:

Therefore, In 1 option C is correct .

In 2 option D is correct option .

Explanation:

In this food chain, the grass, since it is a autotrophic organism is the producer.

The trophic level of an organism is the position it occupies in a food chain.

In this diagram at last position is hawk which eat the snake that mean it has highest trophic level.

Out of the following given choices

A. acids B. nutrients C. roots D. soil?

The answer A. Lichens and Moses secrete organic acids. An example of a secreted organic acid is oxalic acid. These acids react with mineral in the rocks hence dissolving them. Their decaying vegetation (humus) also produces acids that weather the rocks. Another way these plants break rocks are physically using their roots that grow in the cracks and grow bigger.

When a piece of iron that is 25 °C is dropped into water that is 15 °C, the heat from the iron will dissipate into the water until the temperature is the same by conduction. Thus, option A is correct.

Conduction is the transfer of the dissipated energy from the hot iron metal at 25 °C to the water at a lower temperature. The heat or the energy molecules gets transferred from the region of high to lower temperature.

This occurs through the diffusion that allows the hot iron to release the energy from its body that diffuses and gets transferred to the water molecules that have a tempearture of 15 °C, which is lower than that of the iron.

Therefore, the piece of the iron loses its heat to the water till both have the same tempearture.

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Answer:

A and D

Explanation:

Sandstone is the class of rocks which are most likely to be resulted from compacting and cementing particles together in space. Thus, the correct option is D.

Sandstone is a clastic sedimentary rock which is composed mainly of the sand-sized silicate grains. The sandstones comprise about 20-25% of all the sedimentary rocks present on the planet. Most of the sandstone is composed of the quartz material or feldspar because they are the most resistant minerals to weathering processes at the Earth's surface.

Sandstone represents the ancient stream, deltaic, or beach deposits. Uses for these sandstone include liners for steel furnaces, as the building stone, as an abrasive, for the golf-course trap sand, and in the making of glass, computer chips, fiberglass, TV screens, and other paint.

Therefore, the correct option is D.

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The genetics of fruit flies can be used to examine related genes in humans.

Fruit flies and humans share 75% of the disease-causing genes, therefore researchers researching fruit flies can gain insight into human genetics.

Fruit flies make an excellent genetic model for research on human disease. The most common method for learning about genes involves seeing what happens to a fly when a particular gene is "knocked out" of its genome.  

In this manner, fly researchers can examine the gene's function in a pertinent area without compromising the fly's general well-being, which is crucial for simulating human diseases that target particular cell-types.

Therefore, for example, if the gene that was knocked out is a critical gene needed for growth and development.

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The digestive system breaks down food, absorbs nutrients, and eliminates waste through processes involving mechanical and chemical digestion, absorption, and elimination.

Functions of the Digestive System

The digestive system is responsible for breaking down food, absorbing nutrients, and eliminating waste. Here are its main functions explained in bullet points:

Each organ in the digestive system, from the mouth to the intestines, plays a vital role in these processes.

Scientists determine the beginnings and endings of eras based on significant shifts in Earth's geology and life forms, often identified through major geological events and changes in the fossil record. Each era in geologic time represents long time spans categorized by distinct characteristics. Scientists use fossil records, geological markers, and research to define these eras and their transitions.

Scientists, specifically geologists and paleontologists, determine when an era ends and a new one begins based on significant shifts and changes in the Earth's geology and its life forms. This is often identified through the fossil record and major geological events. For example, the end of the Cretaceous era is marked by a significant mass extinction event, including the disappearance of dinosaurs.

An era in geologic time is a long time span, typically billions of years, categorized by distinct characteristics, such as the presence or absence of certain types of fossils. Each era is then divided into periods, epochs, and ages which relate to marked changes in the fossil record or geologic events.

In essence, scientists use a combination of fossil records, geological markers, and ongoing research to define eras and their transitions. This makes the understanding of Earth's history more organized and comprehendible.

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Final answer:

Cells make use of the energy released by ATP in active transport, mechanical work, and biosynthesis.

Explanation:

Cells make use of the energy released by ATP in multiple ways:

Active transport: ATP powers the movement of molecules across cell membranes, against their concentration gradients. This includes the transport of ions, such as sodium and potassium, across nerve cell membranes for nerve impulse transmission.

Mechanical work: ATP provides the energy for muscle contraction and movement. When myosin heads bind to actin filaments, ATP is hydrolyzed to provide the necessary energy for muscle contraction.

Biosynthesis: ATP is used in various biosynthetic pathways to provide energy for the synthesis of complex molecules, such as proteins, nucleic acids, and carbohydrates. For example, ATP is required for adding new nucleotides to a growing DNA strand during DNA replication.

The correct answer is D. a boulder on a hill.

Chemical potential energy is the energy stored in the bonds between atoms and molecules. It is the energy that holds compounds together and can be released or absorbed during chemical reactions.

 Let's analyze each option:

 A. a person swinging a bat: This is an example of kinetic energy (the energy of motion) and also potential energy due to the position of the bat in the gravitational field, but it is not chemical potential energy.

 B. an unlit match: This is a tricky option because an unlit match does contain chemical potential energy in the form of the match head's chemicals. However, the question asks for an example of chemical potential energy, and while the match head does contain this type of energy, it is not the best example among the options provided because it is not actively demonstrating the release of chemical potential energy until it is struck and lit.

C. a stretched rubber band: This is an example of elastic potential energy, which is the energy stored in elastic materials due to stretching or compressing.

 D. a boulder on a hill: This is an example of gravitational potential energy, which is the energy stored in an object due to its position in a gravitational field. It is not an example of chemical potential energy.

Therefore, the most appropriate answer is D. a boulder on a hill, as it directly represents potential energy, although it is gravitational rather than chemical. However, if we strictly consider chemical potential energy, none of the options provided are correct. The unlit match (B) would be the closest to representing chemical potential energy, but it is not actively demonstrating this energy until it undergoes a chemical reaction when lit."

Answer:

Explanation:

This is due to isostatic equilibrium.

Isostatic rebound occurs when load is added or removed on the lithosphere and the surface either sinks or rises under the weight of the asthenosphere.

At first, when load which can be in form of glacier is added to the lithosphere, this block of the earth would sink rapidly at first due to the added weight. With time, as the adjustment continues, an equilibrium is now reached between the lithosphere and the asthenosphere. At this point, the asthenosphere would have gathered enough strength to carry the overlying weight.

Isostatic rebound is slow due to the viscous nature of the Earth's mantle needing time to adjust after glacial melting. It's evident in regions previously covered by ice, like parts of Canada, where the Laurentide Ice Sheet's melting allows the crust to rise at about 2 cm/year. The gradual rebound continues as the mantle material redistributes over thousands of years.

Isostatic rebound is the process of the Earth's crust rising as the result of the removal of mass, such as the melting of glacial ice. This phenomenon is slow because the Earth's mantle behaves like a viscous fluid over long periods, taking time to adjust and redistribute material after the weight from the ice sheets is removed. Since the last glacial period, regions like Canada and Scandinavia, previously covered by massive ice sheets, have been experiencing this rebound.

The crust sinks under the weight of thick ice accumulations during periods of glaciation. After the ice melts, the mantle underneath, which was displaced to the sides, allows the crust to rise slowly back to its original position. For example, in areas west of Hudson Bay in Canada, where the Laurentide Ice Sheet was the thickest, the crust is rebounding at nearly 2 cm/year, showing some of the highest rates of uplift in the world.

The slow nature of isostatic rebound can be further illustrated through the rebound rates worldwide. In areas like British Columbia, the uplift is weaker compared to regions where the ice was thicker. Such gentle uplifts, particularly in coastal and offshore areas, indicate ongoing adjustments in displaced subcrustal material, a process taking thousands of years.

During the enzyme assay, buffers are used to correct and maintain the proper pH. They are composed of a potent basic element and a weak acid. Thus, option D is correct.

What is the function of buffer in solutions?

When acidic or basic compounds are added, a substance is said to be a buffer if it can resist the pH change.

It may neutralize little quantities of acid or base, generally maintaining the solution's pH at a steady level. This is important for processes or reactions that require certain, stable pH ranges.

A significant pH change and hence a potential denaturation of the enzyme are avoided by the buffering substance.

However, buffer agents can also impair enzyme function negatively, such as by inhibiting substrate competition.

Therefore, The pH of a solution will be more resistant to change if a buffer is added.

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Answer:

the student is forming an hypothysis

Explanation:

if, then statements

Answer: A) Energy is transferred from Joey to the water. The temperature of the water increases.

If Little Joey jumps into a pool on a cool fall morning, heat energy from Joey’s body is transferred to the cold water increasing its temperature. It is called conduction.