Question

what is an unintended consequence of mining? removal of soil decrease in pollution loss of habitats removal of minerals

Explanation:

Mining typically aims to extract minerals (removal of minerals is a direct goal). Removal of soil can be part of mining operations but loss of habitats for various species (like plants and animals in the mined area) is an unintended consequence. Mining usually doesn't lead to a decrease in pollution (it often causes more pollution due to dust, chemical use etc.).

Answer:

loss of habitats