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.
it has a negative impact on the environment by creating new niches for wildlife to inhabit.

It has a negative impact on the environment by allowing toxic chemicals to harm wildlife

Explanation:

Opencast mining is the most destructive. This sie embrace it removes the topsoil to get acces to the shallowly deposited minerals. Remivign teh topsoil destroys the ecosystem that was thriving in the region. Mining also produces toxic waste products such as lead and mercury that can be harmful to a population when exposed to them. Usually these toxic substances end up in water bodies affecting marine life and higher organism like humans that depend on marine life for food.

C

Explanation:

b.have there own function.