Question

why do we seek to build large dams name two gases that are formed by burning coal or Petroleum And are poisonous at high concentration other than carbon dioxide​

Answer 1

Dam is a barrier that is built across a river or a stream for storage of water.We seek to build large dams because it can ensure the storage of adequate water for irrigation and also for generating electricity

The burning of fossil fuels -- like coal, oil and natural gas -- releases gases into the air, mainly carbon dioxide, sulfur dioxide, methane and nitrous oxide.

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Answer 2

hey mate here is your answer.....

Dams are used to built because for controlling flood in the area and also to useit as hydroelectricity.

While burning coal is burnt it releases carbon dioxide and lot of ash is released.

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