Answer:
RBCs are disc-shaped with a flatter, concave center. This biconcave shape allows the cells to flow smoothly through the narrowest blood vessels. ... Many RBCs are wider than capillaries, but their shape provides the needed flexibility to squeeze through
I can't see the pictures clearly but maybe this will help
1 carbon and 2 oxygen atoms CO2
Explanation:
its hard to explain unless we know what the question fully asks..
A. hydroxide is the answer
