Provide the full names for the following abbreviations:
$(i)$ $JFM$
$(ii)$ $CPCB$

Minerals,metals,and fossil fuels are which type of energy resources?

In India,forests constitute about

Which of the following statement$(s)$ is/are not correct regarding biomagnification?
$I.$ Heavy metals and persistent pesticides pass into the food chain and increase in amount per unit weight of organisms with the rise in trophic level due to their accumulation in fat.
$II.$ Accumulation of zinc can cause thinning of eggshells in birds.
$III.$ $DDT$ accumulation is a major cause of the killing of fish-eating birds.
$IV.$ Biomagnification occurs only in marine food chains.

Where was the World Summit on Sustainable Development held in $2002$?

$A$ : Irrigation without proper drainage of water leads to water logging in the soil.
$R$ : Water logging results in increased soil salinity.