Mountain madness

2. This is happening to ice and snow in all mountain ranges due to climate change
3. The World's highest mountain range found in Asia
7. These erupting mountains produce gas ash and lava and are often found in certain mountain ranges
8. Beginning with A this mountain range in South America runs down the west of the continent.
9. Beginning with A this word means height above sea level. The top or summit of the world's tallest mountain is 8848 metres above sea level
10. This is lacking at the top of mountains which makes it very difficult for people to reach the summit of high mountains
12. Beginning with A, a mountain range in Europe famous for skiing.

1. beginning with R many of the world's largest of these start in mountains such as the Amazon Ganges and Nile
4. A rapid flow of snow down a slow at high speed which can kill many people
5. The world's highest mountain
6. These natural hazards are sometimes formed where tectonic plates are driven together triggering deadly vibrations. Nepal was hit by a severe one of these in 2015 which killed 6000 people in mountain communities
11. Rivers of Ice that flow out of mountains and downhill