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Biological control of pest is

$\begin{array}{1 1}(A)\;\text{Polluting}\\(B)\;\text{Highly expensive}\\(C)\;\text{Self pereptuating}\\(D)\;\text{Toxic}\end{array} $

1 Answer

Biological control of pest is self pereptuating
Hence (C) is the correct answer.
answered Jul 16, 2014 by sreemathi.v
 
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