Who invented high-yielding varieties of wheat and who was one of the pioneers who worked on technologies to genetically modify crops? -blank- developed high-yielding varieties of wheat; and -blank- is one of the pioneers who worked on technologies to genetically modify crops.

The answer will be d

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.