Which of the following is a nitrogen-fixing bacteria?
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Rickets is caused due to the deficiency of
Identify an example of a connective tissue in humans.
All isotopes of the same element have ____________
When milk becomes sour, ___ is produced.
How many chromosomes does a human cell contain?
What are the organs similar in basic structure/shape, modified to perform different functions called?
If the ___________ firm has zero costs or only has fixed cost, the quantity supplied in equilibrium is given by the point where the marginal revenue is zero.