A because it is just one pack making uo the wolf population of that one area
Because it causes them to move, and so they weather that way. Buut the acid rain can leak into the rock and slowly break down the atoms, causing it to chemically weather faster. Also, just regular water/rain can wash away some covering sediment.
Biodiversity is variety of life. Bio means life and diversity means change, different forms of life. The world constitute different species of plants and animals. Have a nice day!