When the arteriovenous anastomoses are constricted by sympathetic nerve fibers, the superficial capillary loops are a. engorged with blood. b. collapsed. c. by passed. d. not affected?

Ecosystems involve living organisms interacting with non-living things in a productive way; how is photosynthesis an example of this? answer, i will give brainiest to first person to get it right.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

20 the compound al(nh3)2 has atoms of nitrogen.