Herbicticide derived from urea is
Simazine
Atrazine
Unerin
$(a) $ and $(b) $ both
Which pesticides are lipophilic
Which of the following is not an organo-chlorine
Drinking of mineral water with very low level of pesticides (about $0.02 ppm$) for long periods may
The term ‘bio-magnification’ refers to the
Much work on biological control of insects has been done in