What is the underlying mechanism that allows the basilar membrane to excite different hair cells for sufficiently different frequencies

17B. If we call the amount of DNA per genome x, a situation in diploid organisms where the amount of DNA per cell is equal to 2x is:
D. In cells after S phase but prior to cell division.

During the S phase of the cell cycle, DNA replication occurs, doubling the amount of DNA in the cell. Thus, after the S phase but before cell division, the cell has 2x the amount of DNA.

17C. If we call the amount of DNA per genome x, a situation in diploid organisms where the amount of DNA per cell is equal to 4x is:
B. In cells in G1.

In diploid organisms, the normal amount of DNA is 2x. However, when a cell undergoes a process called endoreduplication, its DNA replicates multiple times without cell division. This can result in a cell with 4x the amount of DNA. Endoreduplication can occur during the G1 phase in certain cell types and under specific conditions.

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The goal of the Bureau of Land Management is to preserve public lands' health, diversity, and productivity for both current and future generations to use and enjoy.

The United States Department of Interior's Bureau of Land Management is the departmental division in charge of overseeing federal lands. With its main office in Washington, DC, with control over 247.3 million acres, it oversees one-eighth of the nation's land area.

On public lands, the Bureau of Land Management oversees energy production, mineral development, animal grazing, and outdoor recreation.

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Answer:

Hewo Hooman Being, Here's ur answer

Explanation:

This seems likely enough. But it should be noted that the average number of injuries of the cats brought in having fallen from 7-32 stories is still less than the average number of injuries, per cat, brought in having fallen under that height.

Bye-bye Hooman ^^

Answer: genes nucleus asexual clones

Explanation:

Answer:

in the air

Explanation:

poop

The urine tests are not conclusive for the blood alcohol concentration.

Urine testing is the lowest-performing of the three chemical tests. Luckily, urine testing can be challenged successfully in DUI cases. Urine tests are just as unreliable in DUI cases since they can’t tell you exactly when you took the drug. Urine tests can only detect metabolites or inactive residual traces of a drug.

In addition, urinalysis often misinterprets similar chemical compounds. Codeine and non-nickel cough syrup have been shown to be positive for heroin. Since urine testing is highly unreliable in both DUI and DWI cases, it is possible to contest the results of the test.

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Answer:

use of DDT to control insects.

Explanation:

DDT (dichloro-diphenyl-trichloroethane) was developed as the first of the modern synthetic insecticides in the 1940s. It was initially used with great effect to combat malaria, typhus, and the other insect-borne human diseases among both military and civilian populations. It also was effective for insect control in crop and livestock production, institutions, homes, and gardens. DDT's quick success as a pesticide and broad use in the United States and other countries led to the development of resistance by many insect pest species.

the U.S. Environmental Protection Agency in 1970, began regulatory actions in the late 1950s and 1960s to prohibit many of DDT's uses because of mounting evidence of the pesticide's declining benefits and environmental and toxicological effects. The publication in 1962 of Rachel Carson's Silent Spring stimulated widespread public concern over the dangers of improper pesticide use and the need for better pesticide controls.

In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. Since then, studies have continued, and a relationship between DDT exposure and reproductive effects in humans is suspected, based on studies in animals. In addition, some animals exposed to DDT in studies developed liver tumors. As a result, today, DDT is classified as a probable human carcinogen by U.S. and international authorities.

DDT is:

known to be very persistent in the environment,

will accumulate in fatty tissues, and

can travel long distances in the upper atmosphere.

Answer: I would say D or the last answer

Explanation:

Answer:

The aortic and pulmonary valves, the close to prevent blood from flowing back into the ventricles.

Acidic dyes have a negative charge, while the surface of most cells has a net negative charge.

Therefore, acidic dyes are repelled by the negatively charged cell surfaces, and instead, they are attracted to the positively charged background, such as the glass slide or the extracellular matrix. As a result, the acidic dyes stain only the background and not the cells.

In contrast, basic dyes have a positive charge and can penetrate through the negatively charged cell membrane, binding to negatively charged structures within the cell, such as nucleic acids.

Thus, basic dyes stain the cells themselves rather than the background. The selectivity of acidic or basic dyes for staining cellular or extracellular components is an important tool in histology and microscopy for highlighting specific structures within tissues.

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Answer:

Placed 30 of the soil in the beaker.

mRNA vaccines work by introducing a small piece of the virus's genetic material, called messenger RNA (mRNA), into the body. This mRNA is specifically designed to instruct cells in the body to produce a protein that is found on the surface of the virus.

Once this protein is produced, the body's immune system recognizes it as foreign and produces an immune response, including the production of antibodies and immune cells that specifically target this protein on the virus.

This creates a specific and targeted immune response that can protect against future infections by the virus, establishing adapted immunity.

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Adaptive radiation best describes what is observed in the Hawaiian honeycreepers.

Adaptive radiation is a type of evolutionary diversification that occurs when a single ancestral species gives rise to multiple descendant species, each adapted to a different ecological niche. This process is driven by a variety of factors, including environmental changes, geographical isolation, and the availability of new resources.

The Hawaiian honeycreepers are a classic example of adaptive radiation. They are a group of birds that evolved on the Hawaiian Islands, and are thought to have descended from a single species of finch that colonized the islands millions of years ago.

Over time, the honeycreepers diversified into more than 50 different species, each with a unique beak shape and feeding strategy adapted to the resources available in its habitat. The honeycreepers' diversification was driven by a combination of factors, including the varied habitats and food sources available on the islands, as well as competition for resources between species.

The birds' beak shapes and feeding strategies are particularly diverse and have allowed them to exploit a wide range of ecological niches, including nectar-feeding, fruit-eating, and seed-cracking.

Adaptive radiation is a key concept in evolutionary biology, as it helps to explain the vast diversity of life on Earth. It is also important for understanding how species can rapidly adapt to changing environments and how new ecological niches can be created through the process of evolution.

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Answer:

Each of these organs is made of tissues composed of different kinds of specialized cells

Explanation:

Answer:

y

Explanation:

it can hold more nails

Answer:

True

Explanation:

Answer:

The correct option is;

soil, rock, organic layer

Explanation:

Permeability is the ability of a layer of rock to transmit fluid such as oil or water

The factors that affect the permeability of a rock layer includes the sizes of the rock particles, the ratio of the available voids to the solid mass of the rock, the presence of trapped air and the presence of organic matter

Rocks such as gravels, and  sparingly cemented sands have high permeability

The most impermeable of the options are granite and clay which for granite has large particle mass and contain no voids while clay has very fine particles packed together with little room for water

Therefore, water moves easily between layers  soil, rock, organic layer

Answer:

B on edg 2020 :)

Explanation:  Which is soil, rock and, organic layer

Answer:

cloudy skies and prolonged precipitation can occur, with mesocyclone systems. When the warmer air mass is very humid, heavy or extreme precipitation can occur.

Explanation:

Environments likely to be characterized by the presence of dry scrubs and frequent wildfires are those that lack the presence of rain and suffer high sunlight hours.

When referring to the terrestrial biomes that meet the characteristics described, we can include:

The temperate grassland/cold desert biomes have:

This biome is very dry, and the harsh weather makes it difficult for plants to grow, leading to their dry scrub characteristic. This biome also experiences frequent wildfires due to the intense sunlight and lack of rain to which it is exposed.

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N = 1.386 Ne. and the value of N is a little over 100. After 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start. The effective population size formula that can be used is                        N e = (1/2H) 2N / (2NH - H).

According to the given statement, Diploid wildflowers from a large population are transplanted to a location where they are reproductively isolated from the original population. Their heterozygosity is measured each generation. After 20 generations of random mating, their heterozygosity is half of what it was at the start. The value of N must be estimated. We know that the effective population size is the size of the population that would have the same rate of genetic drift as the actual population.

The effective population size (N e) can be expressed as shown below:

Ne = 4N 1 N 2 / (N1 + N 2) In this formula, N 1 and N 2 are the number of organisms in the two populations.

Thus, after 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start, indicating that: Heterozygosity after 20 generations = 1/2

Heterozygosity at the start or Heterozygosity at the start = 2 (Heterozygosity after 20 generations). The effective population size formula that can be used here is:

Ne = (1/2H) 2N / (2NH - H) Where H is the heterozygosity at the beginning and N is the effective population size.

We can use the Hint given in the question to find that the above equation is approximately:

Ne = (1/4) N/ ln (2) So, N/ ln (2) = 4Ne or N = 4Ne ln (2) ≈ 1.386NeThus, N ≈ 1.386Ne.

The value of N is a little over 100, which is what we can expect.

After 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start. Therefore, the effective population size formula that can be used is N e= (1/2H) 2N / (2NH - H).

Thus, N ≈ 1.386 Ne. and the value of N is a little over 100.

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Answer:

1. The oxidation number of Ca is 2, F is -1 in CaF₂

2. The oxidation number of H is 2, S is 6, O is -8 in H₂SO₄

3. The oxidation number of Ca is 2, S is 6, O is -8 in CaSO₄

4. The oxidation number of H is 1, F is -1 in HF

Explanation:

To get the oxidation number, we need to take the oxidation number of the whole compound 0. Then we need to know the oxidation number of the other elements and we need to take 'x' as the oxidation number of the unknown element.

Example:

In case of CaSO₄,

We can write an equation as-

CaSO₄ = 0

If we need to know the oxidation number of S

We can write the equation like this-

→2+ x+ (-2*4) = 0 (as we know the oxidation number of Ca is 2 as it has two electrons in its last shell which it gives to other elements to form bonds and the oxidation number of O is -2 as it takes 2 electrons to complete its outer shell)

→2+ x+ (-8) = 0

→2+ x- 8 = 0

→x- 6 = 0

→x = 6; which is the oxidation number of S

The following are the oxidation numbers:

In CaF2, the oxidation number of Ca is +2, and that of F is -1.

In H2SO4, the oxidation number of H is +1, that of S is +6, and that of O is -2.

In CaSO4, the oxidation number of Ca is +2, that of S is +6, and that of O is -2.

In HF, the oxidation number of H is +1, and that of F is -1.

Oxidation numbers are a way of representing the degree of oxidation (loss of electrons) or reduction (gain of electrons) of an element in a chemical compound. The oxidation number of an element is calculated based on the number of valence electrons (electrons in the outermost energy level of an atom) and the rules for assigning oxidation numbers.

In general, the oxidation number of an element is equal to the charge it would have if all the bonds in the compound were ionic (made up of positive and negative ions). This allows chemists to predict the behavior of elements in a compound and to balance chemical equations.

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Answer:

Rate and tidal volume

Explanation:

Tidal volume is the volume of air moved in or out of the lungs with each normal breath. A normal tidal volume is around 500 to 600 mL per inspiration and/or 6 to 7 mL per kilogram of body mass. An Emergency Medical Technician (EMT) should assess the respiratory rate (as well as rhythm and quality), having into account that a normal respiratory rate in an adult is 12 to 18 breaths per minute (BPM). Moreover, an appropriate tidal volume is also fundamental in assisting individuals in respiratory distress and arrest.

Spasticity, cramps, stiffness, and discomfort are just a few of the symptoms that can result from tight lower back muscles and back pain. These sensations might be constant, modest aches or intense, crippling misery.

Spasticity is a disorder characterized by an unnatural rise in muscular tone or stiffness, which may impair speech or movement and be accompanied by discomfort or pain. Damage to the nerve pathways in the brain or spinal cord that regulate muscle action is the usual cause of spasticity.

Uncomfortable bodily feelings are generally referred to as pain. It results from nervous system stimulation. Pain can be bothersome or incapacitating. It could feel like mild pain or a violent stabbing. Also, possible adjectives for it are throbbing, pinching, stinging, scorching, or sore.

Soft tissue like a muscle can be found in both humans and animals. Actin and myosin protein filaments make up the muscle cells, which glide past one another to cause contraction and alter the cell's length and form.

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Answer:

More vegataion and need

Explanation:

As the world evolved with human needs, such as food and transport, horses became more demanded. With humans beginning to use horses as trasportation they began to eat better and evolved  to carry humans. Plants also became more accesable the more humans grew plants.

Answer:

An oft-repeated water vapor myth is that warm air can “hold” more water vapor than cool air because as the air warms its molecules move farther apart, making room for more molecules.

Explanation:

:)

Answer:

Whales and dolphins are mammals and have lungs instead of gills for breathing. They have blowholes at the tops of their heads that function like nostrils; they need to put their heads above water every so often to breathe. Both dolphins and whales have hair instead of scales, another quality that is specific to mammals. The animals have live births instead of laying eggs, and baby dolphins and whales nurse from their mothers. Whale and dolphin births take place near the surface of the water, so the young animals can easily take their first breath.

Both whales and dolphins rely on the sounds they make for survival, even though the sounds are utilized differently by each animal. For instance, whales make high-pitched groans and whistles to communicate with one another to warn against danger or navigate during migration

Answer:

COMPARISON AND CONTRAST OF WHALES AND DOLPHINS

Both dolphins and whales belong to the cetacean family and are marine animals that reside in the ocean. Some scientists even assert that dolphins are a type of whale, as the two animals have a number of shared characteristics. However, there are distinct differences between whales and dolphins as well that will teach you more about the physical appearance of these marine creatures and how they survive in their environment.

Answer:

Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.

Hope that helps. x