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simple epithelium with flattened cells found in the inner lining of the mouth, oesophagus and blood vessels and alveoli of the lungs.
plant-like organisms that live and grow in water; they make their own organic food by the...
the process of removing salt and other minerals from seawater, to make it drinkable.
the main blood vessel that returns deoxygenated blood from the head and thorax to the right...
structure surrounding plan tcells i tgives cells rigidity and strength.
the last part of the mammalian large intestine, which stores faeces until it can be expelled...