Summarize the role of phytoplankton in the carbon cycle.

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

the form of energy changes and the total energy increases0l

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products