Which realm is an important source of food, energy and minerals?
Air
Water
Ozone Layer
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Early humans choose to stay in natural caves because they provided shelter from the rain, heat and wind. Natural caves and rock shelters can be found in the Vindhyas and the Deccan plateau.
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Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities
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