In which country is ethanol used as a fuel in vehicles?

Integrated organic farming has been adopted in India by

Reduction in soil fertility due to erosion is an example of

Which one of the following pairs is not correctly matched?

Which processes were included in the integrated organic farming by Ramesh Chandra Dagar,a farmer from Sonipat,Haryana?
$I-$ Bee-keeping
$II-$ Dairy management
$III-$ Water harvesting
$IV-$ Composting
$V-$ Chemical fertilizers
$VI-$ Chemical pesticides

The concentration of an insecticide in the animals of a species is called: