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valve that separates the left ventricle from the aorta.
(also called macromolecules) large, more complex molecules formed when monomers join together....
the process whereby nutrients that have been absorbed from the digestive system are taken up by...
the movement of an organism in response to a one-directional source of light when the stimulus...
can be broken down, in a reasonable amount of time, into its base compounds by micro-organisms...
foods produced from genetically modified organisms.