Two molecules that are responsible for stem cells that all start out identical to form very different types of cells

Hello we have the same names lol.biology is the study of living beings , that is, all plants and animals including humans.

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.

Gases enter the atmosphere and trap the sun's heat warning the earth.

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