I think the answer is Time
The answer is B. Cross-pollination occurs when pollen fertilizes female egg cells on the same flower.
Been a bit since I learned this but I believe the answer is B.
Hope this helps.
Answer:
Smoke-induced oxidative stress limited the oxygen-carrying capacity of the previous red blood cells
Explanation:
The red blood cell (RBC) contains hemoglobin which helps in the transport of oxygen. However, the Jane's smoking must have induced oxidative stress to the cells of her body including RBC, thus compromising it's oxygen-carrying capacity.
Hence Jane's body increased RBC count in order to maintain oxygen supply to all cells of her body.
