All objects in the universe exert one particular force on all other objects this force is gravitational force

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

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 identifies the main purpose of biological taxonomy?