Algae can grow out of control when too many nutrients containing and enter the water. phosophorus and nitrogen
carbon dioxide and oxygen
protein and sugars

(This is 7th grade science)

They both determine the exact age of rocks.

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.