Define these words: Activation energy

Catalyst

Enzymes

Substrate

Conservation of mass

Conservation of energy

Activation Energy: the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction

Catalyst: A substance that increases the rate of a chemical reaction

Enzymes: a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.

Substrate:

the surface or material on or from which an organism lives, grows, or obtains its nourishment.

Conservation of mass: a principle stating that mass cannot be created or destroyed.

Conservation of energy:

a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.

compost can be added to topsoil as a:

pesticide