When two or more elements bond together in specific proportions, is formed?

What’s this animal (picture is tagged) and where is it most likely to live, rainforest or desert?

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks