Evolved during the jurassic or cretaceous periods.

a. angiosperms
b. bryophytes
c. gymnosperms

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

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