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the tube that carries urine from the nephrons to the ureter via the renal pelvis.
series of interlinked food chains by which energy circulates within an ecosystem.
when an animal accumulates body fat or stores food resources during warmer periods and becomes...
a form of asexual reproduction. It is an unequal cell division, in which a small cell forms...
plant-like organisms that live and grow in water; they make their own organic food by the...
a muscular structure on the floor of the mouth of most vertebrates, which manipulates food for ...