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the practice and science of classification. This is the part of systematics that is only concerned with providing scientific names for organisms, describing them and preserving collections of them, and providing classifications for the organisms, keys for their identification, and data on their distributions.
a hormone produced by the adrenal glands which helps to maintain the balance of sodium in the...
an enzyme that catalyses (speeds up) the hydrolysis (breaking) of a chemical bond.
a foreign substance, usually a protein, that stimulates the production of one or more antibodies...