Can someone write a essay please it is due

What must be true for natural selection to heppen

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.

Autonomous underwater explorers will be used to gather large-scale ocean information select the best answer from the choices provided ot