Abiologist observes that a species of stick insects on a remote island has three different color traits, almost equally distributed among the population. one phenotype is dark green, a second is light green, and a third is light green with dark green stripes. over a decade, the biologist observes that the dark green phenotype becomes the most abundant, making up nearly 70% of the population. which statement is the best explanation for this phenomenon?

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.