If an agricultural field is liberally irrigated for a prolonged period of time,it is likely to face the problem of:

In Maharashtra,a $24$-hour toll-free helpline number $1926$ has been set up to provide information regarding . . . . . . .

Contribution of individuals: Women of Garhwal/Himachal.

Domestic waste will result in ..........

$Ahmed \text{ } Khan : \text{polyblend} :: \text{Amrita Devi Bishnoi} :$

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.