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Soil system
Animal system
Micro-organism system
Plant system
Birds usually have a single
Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?
Blood cancer is otherwise called as
Blood does not clot in the blood vessels due to the presence of
Blood does not coagulate inside the body due to the presence of
Blood fails to clot white flowing in the blood vessel as of the presence of
Blood group AB has
Blood group which have no antibodies
Blood group which have no antigen
Blood groups were discovered by