Which statement best predicts the activity of an enzyme-catalyzed reaction as the concentration of substrate in a sealed flask decreases? a. the rate of the reaction will increase. b. the rate of the reaction may increase or decrease. c. the rate of the reaction will decrease. d. the rate of the reaction will not change.

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.