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the space in the middle of the tooth which contains cells, blood vessels and a nerve.
the transfer of pollen from the anther to the stigma of the same plant (self-pollination) or of...
biochemical process that traps radiant or light energy from the Sun and converts it into glucose...
an allergic reaction that triggers the immune system causing constriction and inflammation of...
two bean-shaped guard cells surrounding a pore in the epidermis of a leaf that allow gases to...
microscopic canals running longitudinally through compact bone tissue that contain blood vessels...