Q.
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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
the presence of anything in the environment in excess of the required limit
b
anything put into the environment which was not there in its natural state
c
direct or indirect changes in one or more components of the ecosystem which are not harmful to living organisms
d
international release of any chemical substance in the environment with harmful effects
answer is C.
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