Answer:
Variations are caused by mutation. random mating between organisms.
Explanation:
here is the answer of this qquestion
In order to increase the rate of diffusion of materials in and out of the cell, the following modification can be done to the cell:
1. the shape of the cell can be changed to one that has high surface area to volume ration, for example sphere.
2.The cell can also divide into two in order to increase the surface area to volume ratio.
Answer:
C, you can try to add the iron in your diet first and see if it helps any at all, then see your primary care physician
