Which of the following induces nitrogen fixation in soil?
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A binding price ceiling is designed to
In the following question, out of the four alternatives, choose the one which can be substituted for the given words/sentence.
A state where there is no effective government.
Alps mountain range is located in which continent?
Who discovered television?
What was invented by J. B. Dunlop?
Who discovered Neon?
Who discovered electricity and invented the lightning rod and bifocals?