The answer to the question above is letter a. melting.
>Exothermic is the giving off heat energy the transfer of energy to the surroundings.
>In exothermic reaction, the energy is
usually transferred as heat energy
<span>> Other example of exothermic is combustion</span>
A unicellular or single celled organism is the term for organisms composed of only one cell.
I hope this helped!
Answer:
Enzymes allow many chemical reactions to occur within the homeostasis constraints of a living system. Enzymes function as organic catalysts. ... By bringing the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst.
Explanation: