☆Do some further reading and report what you have learned. The following links may be of help.

1. How the Himalayas were formed

http://www.todayifoundout.com/index.php/2013/12/himalayas-formed/

2. The science of mountain climbing!

http://v.youku.com/v_show/id_XNzYyOTQxNzgw.html

3. Why Sherpas are more likely to die on Mount Everest than Western climbers

http://qz.com/201346/why-sherpas-are-more-likely-to-die-on-mount-everest-than-western-climbers/

4. Why everybody should climb a mountain

http://www.becomingminimalist.com/climb-a-mountain/