The answer is producer because they are at the bottom of the food chain and are the starting point of new energy.
Passive diffusion. they need no help passing
The inorganic portion of soil from rocks getting weathered by chemical and physical means to form soils
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Cell contains half no of chromosomes means if main cell be n then this cell contain n/2
Its
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#3
These processes occur in one region that's
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#5
n turns 2n