Select the correct statement about the evolution of animals. Select the correct statement about the evolution of animals. No animal fossils are found in strata formed before the Cambrian explosion. The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old. Approximately half the phyla of living organism

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

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.

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?