(u=+),(v=-),(f=-)
(u=-), (v=+),(f=-)
(u=-),(v=-),(f=-)
(u=-),(v=-),(f=+)
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Human actions like excessive use of fertilisrs and other chemicals are the causing death if useful bacteria and fungi. if it continues we humans have to suffer a lot. ... bacterial helps in decaying organic waste of bacteria are less means it will not decay properly and it may causes diseases.
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