Can someone please help me with this one. A friend tells you that people can hold their breath until they die. Use your knowledge of homeostasis and control systems to explain why this is highly unlikely to happen.

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.

Not only is it the purchase of about 40% of america, it also grounds to on-go our advancement as a civilization.

Mechanical energy from wind nonrenewable resource