Select the appropriate option regarding forest conservation.

What is the full form of $JFM$?

Assertion : Methane,a component of greenhouse gases,contributes about $20$ percent to global warming.
Reason : The introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.

What is the biological concentration of $DDT$ in the body fat of Indian people?

What damage does vegetation cause?

Ecosanitation is