Question

How does mining impact the environment?
It has a positive impact on the environment by permanently altering the ecosystem.
It has a positive impact on the environment by releasing chemicals into the environment.
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.

Answer 1

The best choice is the third one: mining has a negative impact on the environment by allowing toxic chemicals to harm wildlife.

Why:
- Many mining activities release toxic substances (heavy metals, cyanide, sulfuric acid from sulfide oxidation) into soil and water, which can poison plants and animals, bioaccumulate in food webs, and contaminate drinking water.
- Mining also commonly causes habitat loss, deforestation, soil erosion, sedimentation of waterways, air pollution (dust and emissions), and greenhouse‑gas emissions. These are generally harmful, not beneficial.
- While mines permanently alter landscapes and ecosystems in many cases, that alteration is typically a negative environmental impact rather than a positive one. Some impacts can be reduced or partially reversed by reclamation and remediation, but effects can be long‑lasting.

Brief mitigation measures: environmental impact assessments, stricter regulation, proper tailings and waste-rock management, water treatment (e.g., for acid mine drainage), progressive reclamation, and use of cleaner technologies.