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

Why does the coil rotate?

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

How agriculture pollutes land and water?

Conversion of agricultural lands into fish ponds lead to food crisis and environments pollution. Write your opinion to conduct a is debate on this issue.

To reduce acidic nature of agricultural fields the farmers add _____ to the soil.

Why is top soil more useful to us ?

Why does menstruation occur?

Why does the picture get distored?

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

Why does the brake drum of an automobile get heated up while moving down at constant speed ?