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Answer these questions :-
1. How can we make natural
Fertilizers without spenting
extra money ?
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biogas
take a barral put a hole and a big pipe in that hole and paint the barral with black colour
put waste in that pipe and if you have put cow dung and left it for 10 to 15 days then their will be gas if you want use it or leave it and take the waste it is manure
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