Which shows correctly how energy cycles in an ecosystem?
a. sun producers consumers decomposers
b. consumers sun producers decomposers
c. decomposers sun consumers producers

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."

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