Biology
- Essential (biology), part of an organism is a part which the organism cannot live or reproduce without
- Essential amino acid, one that the organism cannot produce by itself
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Famous quotes containing the word biology:
“Nothing can be more incorrect than the assumption one sometimes meets with, that physics has one method, chemistry another, and biology a third.”
—Thomas Henry Huxley (1825–95)
“The “control of nature” is a phrase conceived in arrogance, born of the Neanderthal age of biology and the convenience of man.”
—Rachel Carson (1907–1964)
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