Question

Why are forests grown in and around the iron and steel cities?

Answer 1

Because forest provide clean environment. Hence, it is advisable to have forest around the industries as the trees take in the carbon dioxide and provide the surroundings with oxygen.

It is also likely that the cities which grew up near the iron & steel mills which were situated near a source of fuel - wood - to supply the mills, when they were first established.

Answer 2

Because tree provide clean environment they reduce CO2 and increase O2