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mammalian organ which filters the blood to produce urine.
single-celled algae that have two flagella and are found mainly in seawater but are also common...
is the supply of materials, in the form of food, required by organisms and cells to stay alive...
the replacement of liver tissue by scar tissue due to damage to liver cells caused by excessive...
simple inorganic chemical substances (mineral salts) that are needed in relatively large amounts...