The sac that regulates the temperature of the testes is the

The scrotum is the sac that regulates the temperature of the testes and maintains its at 35degrees celsius. This temperature is 2 degrees lesser than that of the normal body temperature because, at higher temperatures, the process of spermatogenesis is affected.  Temperature regulation is done by the smooth muscles of the scrotum.

Dthrough a slow process

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.