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12)Give reasons:

a)mining leads to pollution

b)fossils fuel on burning create air pollution.

c)dams do not always have positive effects​

Answer :

SHAANPOOTHANARIGO

Answer:

too hard.................:............

IVEDVIGO
A. All the gases they use when mining create pollution. B. Vehicles that run on gasoline burn fossil fuels and create air pollution. C. Dams can kill fresh water animals and also over flow when there is a flood.

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