The answer i think it changes
Answer:
the answer should be b ot ccc
Answer:
Peas exhibit a variety of contrasting traits (purple vs. white flowers; round vs. wrinkled seeds). The shape of the pea flower protected it from foreign pollen.
Explanation:
Red blood cells are disc shaped. It is thought one factor that allows them to have this shape is because they do not have a nucleus. This tends to increase amount of space inside the cell for hemoglobin.
They have a flexible disc shape which helps increase the surface- to- area volume ratio which enables oxygen and carbon dioxide to diffuse across the red blood cell's plasma membrane more readily.
Their disc shape also enables them to squeeze through tiny capillaries that are half their size .
