Which is not an affect of testosterone in males? A. Increase muscle mass
B. Change the voice to a higher pitch
C. The thickness and distribution of hair follicles on the body and head
D. Sperm production

the answer is c

Explanation:

not much else to explain

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.

i think the answer would be d