Why does the blending of skin color occur?

the reason for the blending of skin color occurs when...

The expansion and contraction of the color cells is controlled by the chameleon's brain to cause a color change.

The melanin in the inner layer can move closer to, or farther away from, the skin surface allowing it to blend in with, blot out, or intensify color from other cells.

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answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

and after water is usually warmed by the sun the water temperature raises and then evaporates .