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3 years ago

Science Question

1 answer:

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The question is incomplete as the image and options are not given, however, the correct image and options are as follows:

A. If liquid Material A is in contact with gaseous Material A and the volume of the gas increases, the gas’s temperature will increase.

B. If liquid Material A is in contact with gaseous Material A and the volume of the gas increases, the gas’s temperature will decrease.

C. When the temperature of gaseous Material A increases, its volume will increase.

D. When the temperature of liquid Material A increases, its volume will increase.

Answer:

The correct answer is - C. When the temperature of gaseous Material A increases, its volume will increase.

Explanation:

The figure and table related to the given question are attached with the answer that shows the volume change during the time period in relation to temperature and the phase of material also changes with an increase in temperature.

According to Figure 1, it is clear that initially, Material A was in the liquid phase and after a certain temperature, it is constant at a phase of a mix of liquid-gas and finally entirely in the gas phase from Time 22 sec to Time 24 sec. as temperature increased and the volume of Material A also increased according to the table 1.

So the hypothesis C is correct.

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3 years ago

Two species of closely related frogs are found in the same pond high in the Andes of South America. Both species only have teeth

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Complete question:

Two species of closely related frogs are found in the same pond high in the Andes of South America. Both species only have teeth on the top jaw. One has small teeth for holding small live prey prior to swallowing. The other species has very large sharp teeth for injuring and killing large prey prior to biting off pieces of flesh for consumption. The above is an example of:

Directional selection
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Answer:

Character displacement

Explanation:

Competition is an ecological and evolutive process very common in nature. Competition might be intra- or interspecific. Competition between different species in a community or ecosystem might be due to the same resource use, or the same territory, shelter, etcetera. When a resource is useful for two or more species, and limited, they compete to gain it.

The principle of competitive exclusion states that different species with the same requirements sharing the niche can not coexist indefinitely based on the same limited resource. When two competing species coexist, this is because of niche partitioning or niche differentiation.

Differentiation of effective niche is closely related to character displacement.

Character displacement is the result of interspecific competition, in which two or more species that live in the same habitat manage to avoid competition by developing different traits. Morphological divergence, or any adaptative trait development, fixated genetically, is the product of niche segregation. Species tend to differentiate morphologically in the presence of strong competitors. Traits divergence favors coexistence in the same place.

In the exposed example, both species live in the same pond. But to avoid competition and competitive exclusion, species developed different teeth sizes to feed on different prey items.

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Answer:john murray

Explanation:

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3 years ago

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Answer:

The given statement is true.

Explanation:

Genome is not a steady entity, it is exposed to various kinds of heritable modifications, a sudden and heritable modification in the arrangement of the genome in an organism, which produces different forms of any gene is called mutation.

The mutations provide the raw material for genetic evolution, mutation leads to the generation of alleles, in the absence of mutation all the genes would prevail only in one form, and the organism would lose to the tendency to evolve and amend with the changing environments.

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3 years ago