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the formation of layers of water of different temperatures in large bodies of water - dams, lakes, seas and oceans.
(also called vascular tissue) the tissues that transport water and dissolved food in a...
organic compound that always contains the elements carbon, oxygen and hydrogen. The building...
the blood vessel that carries blood from the liver to the inferior vena cava.
a large tongue-shaped organ in the mammalian body which secretes hormones and digestive enzymes...