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Sedimentation has been identified as a primary stressor for the existence and recovery of coral species and their habitats. Sediment deposited onto reefs can smother corals and interfere with their ability to feed, grow, and reproduce.

Answer:

Extinction occurs when an entire species cannot adapt to a long-term environmental change.

A population that cannot find food after a flood may migrate to survive.

Over many generations, the buildup of favorable adaptations in a population may lead to speciation

Explanation:

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Extinction occurs when an entire species cannot adapt to a long-term environmental change. A population that cannot find food after a flood may migrate to survive.

Extinction is the eventual devastation of a certain class of organism  when  they become unable to adapt to the environmental changes. Extinction can occurs through natural calamities such as flood, earthquake etc. or by human activities which destroys the habitats of the organisms.

A population that cannot find food after a flood may  migrate to survive. They may travel over distances to gather food or water or to shelter somewhere.

Over many generations, the buildup of favorable adaptations in a population may lead to speciation. It is the process by which a new species is originated. They find better adaptation to reproduce and make their population common.

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Answer:

a. The thin filaments slide past the thick filaments.

Explanation: is correct/post protected

Answer:

d. All of the above

Explanation: is correct. post protected

Answer:

Okazaki fragments

Explanation:

Answer/Explanation:

ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis. These processes, as well as others, create a high demand for ATP.

The frequency of a wave is the number of waves that pass a point in a given amount of time. It is measured in hertz (Hz), which is equal to one wave per second. The wavelength of the waves is 12 meters, the speed of the waves is 6 meters per second, and the time between wave crests is 2 seconds.

The wavelength of a wave is the distance between two consecutive wave crests or troughs. It is measured in meters. The speed of a wave is the distance that it travels in a given amount of time. It is measured in meters per second.

Frequency = 0.5 Hz

Wavelength = 6 meters

Wavelength = Speed / Frequency

Wavelength = 6 meters / 0.5 Hz

Wavelength = 12 meters

Speed:

Speed = Wavelength × Frequency

Speed = 12 meters * 0.5 Hz

Speed = 6 meters per second

The time between wave crests:

Time between wave crests = 1 / Frequency

Time between wave crests = 1 / 0.5 Hz

The time between wave crests = 2 seconds

Therefore, the wavelength of the waves is 12 meters, the speed of the waves is 6 meters per second, and the time between wave crests is 2 seconds.

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Prior to the formation of a land bridge about 3 MYA, marsupials were diverse and abundant in SOUTH AMERICA. The western half of Gondwana separated from the eastern half million years ago.

Gondwana was a super landmass containing all continents that began to break up during the Jurassic.

The western half of Gondwana (i.e., Africa and South America) separated from the eastern half (i.e., India, Australia, and Antarctica) million years ago.

This separation led to the divergence of many taxonomic groups, including Australian marsupials and South American marsupials.

Some South American marsupials include, among others, Andean caenolestid, Chacoan gracile opossum, long-nosed caenolestid etc.

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Answer:

Autonomic nervous system

Explanation:

Answer:

answer A the conversion of CO2 to an organic compound.

Explanation:

Carbon fixation is first step of Calvin cycle. The carbon fixation is process during which inorganic CO2 gas into organic compounds.

The carbon fixation does not involve usage of RuBisCO to form 3-PGA. This step will take place during regeneration process of Calvin cycle.

Carbon fixation refers to the conversion of carbon dioxide to an organic compound.

It is the process by which autotrophs fix atmospheric carbon to produce organic compounds. It is the assimilation of inorganic carbon and its transformation to organic compounds. This can be used as the storage of energy and for the production of biomolecules.

All the autotrophs fix atmospheric carbon dioxide by the phenomenon of chemosynthesis or photosynthesis. The main process of carbon fixation is the photosynthesis. The process of carbon fixation takes place in the light-independent reaction or dark reaction of the process of photosynthesis.

Thus, the correct statement is option a.

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Answer:

Efectivamente, una neurona puede ser a la vez presináptica y postsináptica y de hecho, esto es lo que sucede habitualmente en el Sistema Nervioso, formado por una intrincada red de neuronas que establecen multitud de contactos sinápticos entre sí y que a veces se consideran presinápticas, y otras, postsinápticas. Estos términos hacen referencia a la neurona que en un determinado momento envía la información (presináptica) y a la neuronas que la recibe o receptora (postsináptica). Si en una sinapsis química la neurona presináptica libera un neurotransmisor que se une a los receptores de la membrana postsináptica, se producirán cambios eléctricos en el potencial de membrana de la neurona receptora. Si la suma de todos estos cambios eléctricos (sumación espacial y temporal) supera el umbral de excitación de esa neurona postsináptica, se desencadenará un potencial de acción en su axón que se propagará a lo largo de él hasta llegar a los botones terminales, donde provocará de nuevo la liberación de un neurotransmisor. Así, la neurona postsináptica se convierte en presináptica enviando información a otras neuronas, que serán en este caso, neuronas postsinápticas.

Explanation:

The postsynaptic membrane depolarizes when Na+ reaches the postsynaptic cell. This depolarization induces an excitatory postsynaptic potential, which increases the likelihood of an action potential being triggered by the postsynaptic neuron (EPSP).The membrane potential can so surpass the barrier required to generate an action potential.

One postsynaptic potential's amplitude at the instant the next one starts will algebraically sum with it to create a bigger potential than the sum of the individual potentials. As a result, the membrane potential can cross the threshold necessary to produce an action potential.

Therefore, If a postsynaptic neuron is stimulated to threshold by spatial summation, this implies that (the postsynaptic cell has many synapses with many presynaptic neurons).

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Answer:

The pituitary gland

The pituitary gland is vital to sleep because it secretes growth hormones. Sleep is essential for growth because it triggers the release of several hormones.

Our brain's pituitary gland is a structure that creates specialized hormones, including growth hormone (also referred to as human growth hormone or HGH). Growth hormone (GH) is released in pulses during the course of a 24-hour cycle.

Early sleep, in temporal conjunction with the beginning of the first period of deep slow-wave sleep, is when normal adult participants have the most consistent and frequently largest GH pulse (SWS).

Therefore, sleep, stress, exercise, and low blood glucose levels all raise growth hormone levels, released by the pituitary gland.

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Answer:

92 sister chromatids, in 46 pairs that are connected by a centromere

Explanation:

A human skin cell contains 46 chromosomes (23 paternally inherited and 23 maternally inherited). Before mitosis, the product of the replication is 92.

Cell division occurs during mitosis. All eukaryotic cells go through the process. There are four stages to the process. The cell divides during the procedure. A daughter cell that is identical to the parent cell is created.

A total of 46 chromosomes make up the 23 pairs of homologous chromosomes that make up human somatic cells. Since there is no genetic recombination during mitosis, unlike the meiotic cell division, which results in the production of haploid gametes, the daughter cells formed during mitosis are identical.

So, before mitosis, 46 + 46 = 92 chromosomes.

Therefore, the product of the replication is 92.

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Answer:

Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in.

Answer:

The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.Explanation:

because it is

Answer:

Genetically modified (GM) foods contain at least one ingredient coming from a plant with an altered genetic composition.16 Genetic modification, also known as genetic engineering, often introduces new, desirable characteristics to plants, such as greater resistance to pests. Many U.S. crops are grown using genetically engineered seeds, including a large share of the soybean, corn, cotton and canola crop. As a result, the majority of processed foods in the U.S. contain at least one genetically modified ingredient.About one-in-six (16%) Americans care a great deal about the issue of GM foods. These more deeply concerned Americans predominantly believe GM foods pose health risks. A majority of this group also believe GM foods are very likely to bring problems for the environment along with health problems for the population as a whole.A number of observers have suggested that Americans’ limited familiarity with genetically modified foods suggests that people’s opinions about GM are “soft” and, therefore, more likely to change over time and, potentially, to be sensitive to differences in survey question wording.

Explanation:

Genetically modified foods are made in such a way that their less effective or diseased genes are eliminated and beneficial genes are overproduced.

Genetically modified crops may be defined as those crops or foods which are derived in such a way that their genetic material does not occur naturally.

The concerns of GM foods outweigh the benefits and genetically modified foods should not be used. Some of the reasons are given below:

Therefore, the concerns of GM foods outweigh the benefits and genetically modified foods should not be used.

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Answer:

Antibiotics save lives but any time antibiotics are used, they can cause side effects and lead to antibiotic resistance.

Since the 1940s, antibiotics have greatly reduced illness and death from infectious diseases. However, as we use the drugs, germs develop defense strategies against them. This makes the drugs less effective.

Antibiotics fight germs (bacteria and fungi). But germs fight back and find new ways to survive. Their defense strategies are called resistance mechanisms. Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.

Answer:

Binary fission

Explanation:

The cell division process of prokaryotes, called binary fission, is a less complicated and much quicker process than cell division in eukaryotes. Because of the speed of bacterial cell division, populations of bacteria can grow very rapidly.

The type of rock from which its made is the characteristics of the lower mantle causes it to contain more liquid than sections in the upper mantle.

A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body.

The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume. As Earth began to take shape about 4.5 billion years ago, iron and nickel quickly separated from other rocks and minerals to form the core of the new planet.

The mantle is made up of a semi-molten rock called magma. The mantle can be split into two different sections which consist of the lower mantle, which is made from a more solid rock.

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Deoxygenated blood from the leg muscle returns to the heart, moves to the lungs to be oxygenated, goes back to the heart, and flows through the body again.

The circulatory system is a complex system in the body whose function is to keep the flow of oxygenated blood throughout the body.

This system is composed of multiple steps that create a cycle and usually involve the following organs:

Here are the steps if we start with deoxygenated blood in the muscles.

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Answer:

im pretty sure it's A correct me tho if I'm wrong

Answer:

template strand in both bacteria and eukaryotes

Explanation:

Given our understanding of Radioisotopes and ionizing radiation, we can confirm that they allow us to develop high-resolution images of some tissues, as well as induce apoptosis in cancerous tissues.

As we know, Ionizing radiation can be dangerous to humans and when used, must be used will all the proper safety procedures in place. This kind of radiation has enough power to cause mutations on a genetic level. However, this radiation also allows us to use X-ray imaging to obtain high-resolution images of bone tissue.

As stated before, ionizing radiation and radioisotopes are powerful enough to cause mutations on a genetic level. At times, these mutations can be so severe that they trigger apoptosis in cells. Scientists have been using this technology in order to induce apoptosis in cancer cells on command, with mixed results.

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Answer:

The formation of oil begins in warm, shallow oceans that were present on the Earth millions of years ago. ... It is this sediment on the ocean floor that then forms oil over many years. The energy in oil initially comes from the Sun, and is energy from sunlight that is trapped in chemical form by dead plankton.

Explanation:

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Answer: oil is formed by bones they decompose after hundreds of years of time

Explanation: btw it’s Alex

Answer:

1) carbon dioxide, water, and sunlight.

2) glucose and Oxygen, and humans got benefited by consuming (breathing oxygen) that are produced by plants while photosynthesis.

3)During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.