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a molecule that accelerates (speeds up) a chemical reaction, by lowering its activation energy, without being changed by the reaction.
remove starch from the leaves of a plant by preventing photosynthesis from occurring (for a few...
the destruction of the enamel of a tooth owing to the action of bacteria that live in plaque....
the teeth found at the back of the mammalian jaw. In herbivores they have broad surfaces and...
a muscle, gland or organ capable of responding to a nerve impulse in order to bring about a...