Identify the odd one out.

Increase in the percentage of fauna and decrease in flora may be dangerous because it enhances

Increase in concentration of a toxicant at successive trophic levels is called

Assertion: Deforestation is one main factor contributing to global warming.
Reason: Besides $CO_2$,two other gases,methane $(CH_4)$ and $CFCs$,are also included under greenhouse gases.

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

Select the incorrect statement$(s)$ from the following.