What occurs during the coagulation phase of the blood-clotting reaction?
select one:
a. platelets aggregate at the wound site, and the fibrin mesh forms.
b. blood vessels near the wound site constrict to reduce blood loss.
c. endothelial cells divide to regenerate the walls of the blood vessel.
d. white blood cells aggregate at the wound site to reduce infection.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.