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movement of the Earth's continents as the Earth's tectonic plates shift.
tissue that makes up the majority of the plant body and performs various functions.
the sheet-like muscle found below the ribcage that plays a vital role in breathing.
a muscle, gland or organ capable of responding to a nerve impulse in order to bring about a...
large blind-ending sac forming the first part of the mammalian large intestine, to which the...
(also called the stele) the region that includes the pericycle and the vascular tissues in a...