Run-off from fields is

Run off from fertilizer -rich crop fields causes

Acid rain can be best defined as (i) surface run-off from agricultural land containing chemicals like fertilizers (ii) rainwater containing dissolved acids (iii) the rain of acids formed in the clouds due to lightning

Explain water pollution due to surface run off from land.

An athlete runs a total distance of 4800 m around a square field of side 200 m. How many rounds of the field did the athlete take ?

If you see water running off from a public tap, what would you do about it?

_____________ is a process by which the proglotids are cut off from the tapework.

An aeroplane runs for some distance on the run way before taking off. Why?