Answer:
Step-by-step explanation:
Smelting is a form of extractive metallurgy to produce a metal from its ore.
Iron smelting technologies are ways through which iron is extracted from its ore. The process releases a lot of harmful gasses and chemicals into our environment and many resources are exploited as well.
from the above-mentioned options, iron smelting technologies play somewhat major roles in each of these environmental problems.
Smelting plants release sulfuric acid mist that permeates the atmosphere which causes acid rain.
A factory setup away from cities is required in order to ensure an abundance of resources at a low price and that the majority of the population is not getting diseased or harmed in any way to do so land is cleared leading to deforestation.
Erosion means degradation of land and considering iron smelting plants, chemicals are naturally released into the environment which does degrade the nutrients and minerals in the land making it suitable for usage but still eroding it physically
Considering iron smelting plants, chemicals are naturally released into the environment harming it. Since water is required in these plants to produce steam, water as an obvious source gets polluted. The discharge from the factories are also released in near by water bodies where these factories are set up.