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Imagine a population of mice that is either long-tailed or short-tailed. If a forest fire happened to
kill most of the mice with short-tails, the population of long-tailed mice would increase. This
evolution would be contributed to

selective breeding
genetic engineering
human impact
environmental factors

environmental factors

Explanation:

this is because forest fires are usually because of the rise in temerature

selective breeding

Explanation:

because only long tailed mice population dominating in forest, as short tailed mice are cullied in forest.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck