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Q. Nitrogen Fixation is carried out primarily by
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Q. The child will be a male, if the zygote has an __ combination.
Q. Red blood corpuscles are formed in the
Q. A person of blood group AB can receive blood from a person of
Q. One of the most important carbon compounds are _________
Q. Digestion of starch in the mouth into sugar is done by?
Q. Why do human bones become weak in old age?
Q. Which of the following organisms fix nitrogen in aquatic ecosystems?
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