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liquid that drains out of a landfill and is contaminated with solutes from the waste matter
the destruction of the enamel of a tooth owing to the action of bacteria that live in plaque....
the volume of air that is inhaled and exhaled during normal breathing.
breaking down of large nutrient molecules using chemical means (e.g. through the action of...
all the chemical reactions involved in maintaining the living state of the cells and the...