Gymnosperms have been around for at least:

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

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.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle