Question

What is NOT a method that has been used to reduce the negative environmental impact of mining? A. recycling mined metals B. creating mining technology C. using only man-made metals D. improving environmental regulations

Answer 1

The only method which has not been used to reduce the negative environmental impacts of mining is the use of man-made metals.

Since, natural metals are in abundance till now and that science has not come up with a substitute for natural metals, we tend to use natural metals only.