How does mining impact the enviroment?
a.) it has a positive impact on the environment by permanently altering the ecosystem
b.) it has a positive impact on the environment by releasing chemicals into the environment
c.) it has a negative impact on the environment by allowing toxic chemicals to harm wildlife
d.) it has a negative impact on the environment by creating new niches for wildlife to inhabit

The correct answer is option C,

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

Reason -

Mining adds to the problem of pollution as it involves the extraction of chemical elements  either in solid, liquid or gaseous form. The extraction impacts land, air and water  as mining processes may release unrefined mineral extract into the air. These extracts also get deposited in the soil and mixed with the nearby water body or released into the air or consumed by humans or living organism which adversely affect the health of living beings  and causes environmental degradation thereby leading to problems such as

a) illnesses related to the respiratory systems,

b) sullifaction of water bodies

c) disturbance in the ecosystem.

The correct answer is C) It has a negative impact on the environment by allowing toxic chemicals to harm wildlife

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

the answer to your question is b