The bases of rna are the same as those of dna except that rna has

uracil instead of thymine.

uracil instead of adenine

cytosine instead of guanine.

cysteine instead of cytosine

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.