Question

Answer this question please it's urgent....​

Answer 1

b- because use of chemical fertilizer it vll gave a best production , as we go futher chemical fertilizere reduce the fertility of respective soil then decrease in crops yelding.

A- here uses of manur cause manur is made up of bioagents such as leaves organic ded bries ect which increase the fertiallity and make soil rich in nutrition

C- because there are usese of manmade chemical fertilizers and the other one is by naturally.