Through photosynthesis at least a half of the total carbon dioxide fixation on earth is carried out by?
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Which of the following is not correctly matched?
Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface
Chemical formula for sulphurous acid is:
What is contained in Chlorophyll ?
Who is the author of the book 'Akhada: The Authorized Biography of Mahavir Singh Phogat'?
Who invented the bifocal glasses?
Black revolution relates to which of the following?
Black revolution relates to petroleum production.