Energy that is not passed on from one trophic level to the next is
a. lost as heat
b. returned to the sun
c. destroyed
d. all of the above

genetic variation will increase because of a new habitat and food source.

explanation:

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.