How is biodiversity important to the biosphere? O A. Biodiversity increases nutrient recycling.
O B. Biodiversity increases erosion rates.
O C. Biodiversity decreases ecosystem stability.
D. Biodiversity decreases biological productivity.

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

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.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?