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variation due to the small differences in the genes that control each feature and characteristic of an individual organism within a species.
the ground substance component of connective tissue in which the cells of the tissue occur.
a person who does not eat animal flesh, but does usually include milk and eggs in their diet....
semi-liquid mass of partially digested food and gastric juices, produced in the stomach.
simple epithelium with flattened cells found in the inner lining of the mouth, oesophagus and...
invisible, short-wave radiation emitted by the sun, which can cause cancer in humans.