Im pretty sure the answer is <span>plates.. Hope this helps ::))</span>
A lack of blood flow determines the number of cell layers that can
survive when they are transplanted
The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
The answer is 800 meters.
You find this by taking the total distance of the first lap and doubling it. You could also find it by adding 400 meters to 400 meters, which would total at 800 meters
