Why does the soil of agricultural lands get tested for pH?

How is agricultural land polluted?

Can we have only Agricultural lands and orchards instead of forests ?Why?

How agriculture pollutes land and water?

Yasina khatoon cultivates jute in 55% of her agricultural land, if she cultivates jute in 11 bighas of land, let's find her total agricultural land.

Why does the picture get distored?

How do you test the pH of the soil in the agriculture field ?

How does the land used for farming get polluted ?