The raw material for making polyblend is

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

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.

Contribution of individuals: Sunderlal Bahuguna.

The standard of living is very badly affected by

$FOAM$ stands for $........$