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(also called lithospheric plates) massive, irregularly shaped slabs of solid rock.
the right and left halves of bilaterally symmetrical organisms are mirror images of each other...
the blood circuit from the heart to the body and back to the heart.
an international agreement to phase out the use of CFCs, signed by 49 countries in Montreal,...
the cone-shaped region of the renal medulla, made up of the loops of Henlé and the collecting...
the discharge of heated water directly into rivers, lakes or the sea, usually from power plants...