Biology
Oxygen accounts for ____ % of totals human body mass?
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Name the hardest part of the human body:
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Main component of bones?
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Which of the following protects the body against infectious disease and foreign invaders?
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Total blood volume in adult is?
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A group of very similar inter breeding organisms constitutes?
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Members of one species inhabiting the same are form__________?
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What is the chance of diabetic baby born to parents both heterogeneous normal ?
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Which is an organic compound found in most cells ?
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