Why are mountains so important?

CREAF and NEMOR have made a video explaining why mountains are so important.

Mountains help to rain; they filter the rainwater and moderately direct it downstream. They provide sediments and vital nutrients for the crops of the plains and deltas. They supply us with wood, firewood, mushrooms, fruits, meat, dairy products and fabrics. Many sports can be done in the mountains too, and, therefore, they attract tourists. They also offer us peace and leisure and concentrate an often unique biodiversity that makes all these benefits possible.

However, mountains are also under a lot of pressure, and climate change, as well as other changes in the way we use the land, is putting all their benefits at risk.