What is the diagonal movement called?

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

How do chloroplasts set plants apart from other living things