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the region of the kidney where the renal artery enters, and where the renal vein and the ureter leave the kidney.
the sheet-like muscle found below the ribcage that plays a vital role in breathing.
in plants: the structure within a seed that will develop into the new plant.
the widespread and rapid extinction of species in the present age due to negative human impact...
primitive type of fish that lives very deep underwater and has four leg-like fins. It is thought...
undifferentiated cells found in almost all organisms that have the ability to develop into any...