The water table

a. rises and falls with precipitation
b. is the bottom layer of the saturated zone
c. is a layer of porous rock below an aquifer
d. always stays in the same place

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

In what part of a chloroplast does glucose production occur? a. atp synthase b. photosystem ii c. photosystem d. stroma

How does natural selection change thephenotypes within a population over time?