The theory of dreaming proposes that dreaming occurs when the cerebral cortex synthesizes neural signals generated from activity in the lower part of the brain. activation-synthesis cognitive manifest content latent reasoning

The answer activation-synthesis. The theory is pegged on the high brain activity in the brain stem during deep sleep (rapid-eye-movement phase). The activity in this region is different during sleep and wake states. According to the theory, the primary consciousness is activated,
and expanded into secondary consciousness, during dreaming, while the body is an atonic state.

1.989×10^30 kg is the weight of the sun.

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.