Where was the Kyoto Protocol adopted?

Joint Forest Management concept was introduced in India during: (in $s$)

Select the correct statement regarding conventional chemical farming methods.

How many sentences are correct?
$(1)$ $CNG$ burns most efficiently.
$(2)$ $CNG$ cannot be adulterated.
$(3)$ $CNG$ is cheaper than petrol and diesel.
$(4)$ In the $1990$s,Delhi ranked $4$th among the $41$ most polluted cities of the world.

Loss of the upper fertile layer of soil is known as:

What is $FOAM$?