Because people suck
The worst thing that people have done to damage Mount Everest is by leaving there rubbish/trash behind. Today this is more tightly controlled and improving.
The only pollution on Mount Everest is the rubbish that climbers leave behind.
Today climbers and sherpas can earn extra money by bring down any of their rubbish from the slopes of Mount Everest.
There is over 50 tonnes of rubbish on Mount Everest, including a helicopter, oxygen canisters and food waste. There is so much rubbish that it is sometimes called the world's largest rubbish heap!
The rubbish that is collected from the slopes of Mount Everest by Sherpas every year is either burned, recycled or even made into art.
they die
No not really as the only animal that lives on Mount Everest is the Euophrys omnisuperstes, a small jumping spider. The rubbish effects man more than anything, it can be a dangerous hazzard and is not very nice to look at.
All the rubbish found on Mount Everest has been left by climbers who are too tired to carry it down the mountain. Today there are dedicated teams whos role is to bring the rubbish down off the mountain.
Mount Everest use to be called a junk yard because of the amount of rubbish climbers use to leave behind on the mountain. Today this has improved a lot with teams going there just to bring rubbish down.
Mount Everest is used by people for climbing and mountaineering.
Here in England we call Mount Everest just that......Mount Everest.
Rubbish left on Mount Everest affect animals greatly. They can mistake it for food, or get caught in it and suffocate. Plants however, are not as badly affected as plants and vegatation don't grow above 5,700 meters (roughly) but still can cause harm and damage wildlife. People are doing things to reduce all rubbish and waste although, predicted by scientists, there is roughly 10 tonnes of rubbish (excluding dead people). Hope this helped. :D