Carrying capacity of earth is
$5000$ millions
$50,000$ millions
$5,00,000$ millions
$50,00,000$ millions
(b) The carrying capacity of earth for human population is considered to be about $50$ billions.
Who defined ecology as the reciprocal relationship between organisms and their environments
In which one of the following pairs is the specific characteristic of a soil not correctly matched
Ultraviolet radiation from sunlight cause the reaction that produce
Mulching helps in
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