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small tube that carries air inside of the lungs of vertebrates.
(also called lithospheric plates) massive, irregularly shaped slabs of solid rock.
the seepage of acidic, contaminated water from disused mines and mine dumps.
an individual who donates an organ for the purpose of transplanting it into another person in an...
the condition caused by a severe shortage of both energy and nutrients in the diet over an...
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...