2. What statement about enzymes is true? O
Enzymes increase energy barriers so that
Reactants become products quicker with
O
Enzymes are chemically changed and use
O
Enzymes help lower the activation energy
can begin.

Enzymes help lower the activation energy

Explanation:

enzymes lower the activation energy needed for the reaction while increasing the rate at which the reaction is completed

a chair, a bed, and a toothbrush

explanation:

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.