How do enzymes take place in chemical reactions a. no answer provided
b. enzymes increase the activation energy of that reaction
c. most enzymes slow down chemical reactions
d. enzymes decrease the activation energy in the reaction
e. enzymes are converted into products in the reaction

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water