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(also called pith rays) sections of the medulla that occur between the vascular bundles.
(also called physical digestion) the breaking down of food into smaller pieces using mechanical...
a hormone produced by the adrenal glands which helps to maintain the balance of sodium in the...
a form of asexual reproduction. It is an unequal cell division, in which a small cell forms...
group of similar organisms that can breed with each other to produce fertile offspring. It is...
a small finger-like blind-ending extension of the mammalian large intestine connected to the...