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Which of the following helped in the saving of trees?

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Which of the following helped in the saving of trees?

(a) Pouring of water

(b) Developing of chemical manuals

(c) Use of modern agriculture

(d) Development of iron and steel

I got this question during an interview.

This is a very interesting question from Environmental Compliance Status in India in chapter Environmental Clearance for Establishing and Operating Industries in India of Energy Management

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Right option is (d) Development of iron and steel

Explanation: Development of iron and steel saved the trees that were used for most heavy construction and ship building. Coal mining saved more trees that didn’t need to be cut down for fire wood and the manufacture of charcoal.

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