Answer:
Shape of Red Blood Cells Erythrocytes are biconcave discs with very shallow centers. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.
Answer:
threaten the food webs of their invaded habitat and effect the ecosystem.
CHO is the short term for carbohydrate in medical lingo.
So it would be Carbon, Hydrogen and Oxygen
A. Carbon is the answer
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Evaporation. Transpiration and photosynthesis deal with plants, living things. Sweating with humans, living things. Evaporation does not, therefore leaving it the only option left.
