Which of the following is an example of an environmental variation? a marge dyes her hair blue. b homer inherited baldness from his father's side of the family. c apu is a tongue roller, but his brother sanjay is not. d bart is a boy because he has an x and a y chromosome.

A. Marge dyes her hair blue

Explanation:

I love the simpsons :)

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.