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an animal that eats plant material only.
the blood circuit from the heart to the lungs and back to the heart.
compounds that consist of any combination of elements, but do not usually contain carbon and...
diet which contains all the nutrients needed by the body in the correct quantities and...
(also called lithospheric plates) massive, irregularly shaped slabs of solid rock.
a thin, flexible layer of the plant cell wall inside the middle lamella. It consists mainly of...