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the tube that carries urine from the nephrons to the ureter via the renal pelvis.
the practice and science of classification. This is the part of systematics that is only...
three pairs of exocrine glands which secrete saliva into the mouth.
the process of removing salt and other minerals from seawater, to make it drinkable.
an antigen preparation that stimulates the immune system to give protection against a particular...
the splitting of water molecules into oxygen atoms and energy-rich hydrogen atoms to be used in...