BIOLOGY HIGH SCHOOL

Which sentence best describes vestigial structures? They contain genetic mutations. They may have had an important function in the past. They are necessary for an organism's survival. All animals have them.

Answers

Answer 1
Answer:

Answer: They may have had an important function in the past.

Explanation:

  • Vestigial structures are the ones which are present in an organism but do not serve any essential function in the organism.
  • It is believed that these structures must have served an important function in the past but have lost their functionality over the course of evolution.
  • An example of vestigial structures found in humans is the tailbone.
Answer 2
Answer: Vestigial structures are best described as: They may have had an important function in the past

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Predict what might happen to this river ecosystem in a boreal forest biome if a dam were built

Answers

if a dam was built it would flood the river. and perhaps could destroy the land. hope this helps. sorry it's not really explained well. 

during the day, when the sun is shining, the ground gets warm mainly as a result of 1. the emission of greenhouse gasses from factories and vehicles 2.heat from Earth's core being conducted to Earth's surface. 3.convection currents in the atmosphere heating the ground. 4.radiated heat from the Sun being absorbed by the ground.

Answers

Answer: Option D

Explanation:

During the daytime when the sun is shinning bright in the sky and the sun rays reaches the earth.

The ground becomes warm by the effect of sunlight. This is because the sun radiates huge amount of heat from its surface.

This heat reaches the earth in the form of light energy. This heat is absorbed by the earth's surface and makes it warm.
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The biome dominated by conifers, such as spruces and firs, is the(A) chaparral
(B) deciduous forest
(C) tropical rain forest
(D) tundra
(E) taiga

Answers

Tiaga would be your best bet. Tundra might not have enough moisture and is treeless.
i think it might be tundra

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Answers

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Answer:

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