Because at night there is no clouds in the sky to be cool but during the day there are clouds which give us cool air
Tolerate heat because if the animal cant take the heat they wont survive in the desert
They no probably no longer eat the same things, or one of the populations has adapted to its environment and the other flies continue to be normal.
Answer: <u>Option C
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Animals moving in packs or flocks, try to utilize the energy efficiently. The same case is with birds moving in V shape. They use the energy of the air around them, so that air pressure could help them fly with less input of energy. V shape pattern is more aerodynamically energy efficient.
Also, while flying there are no chances of finding mates for reproduction, so option A and B are incorrect.
