Which of the following is a common environmental impact of both surface and underground mining?

• A. Water pollution and habitat disruption.
• B. They do not cause any environmental changes.
• C. They exclusively cause air pollution.
• D. They enhance biodiversity.

Answer: (A)

Mining on both the surface and underground disturbs the land and the waterways that run through it. When earth is removed, blasted, or churned up, it creates a lot of exposed material and waste rock. This exposure allows chemicals in the rock to interact with water and air, leading to processes like acid mine drainage and the leaching of heavy metals into streams and groundwater. That contamination harms water quality and can travel downstream, affecting aquatic life and human water use. At the same time, the physical disturbance of land—clearing vegetation, soil displacement, and creating large piles of waste—disrupts and fragments habitats for plants and animals. So, water pollution and habitat disruption are common outcomes of both surface and underground mining, even though mining can also cause air pollution and other effects. The other options don’t fit because mining does cause environmental changes, air pollution is not the exclusive impact, and mining generally reduces biodiversity rather than enhances it.