There's no accurate way to know how many people ski/snowboard in the world since there is no way to know who does and who doesn't, for instance, just because someone owns skis doesn't mean they ski, the only way that you could find out is an extremely large scale study and even than many people would not reply to it.
over 1 billion people go skiing each year.
3 people
1.9 milion
1million
Many
120 million each year
like about 43 people.
Many
In the United States, 39.8 people on average are killed skiing or snowboarding each year [National Ski Areas Association], and 43.6 serious injuries occur every year. As there are approximately 15M American skiers, this means there are .88 fatalities per million days of skiing and snowboarding.
4
Olympic cross-country skiing is many people racing to see who can get to the finish line faster by cross-country skiing, or skiing on flat land.
Yes. Many people and animals do.
Animals and people lives on the Alps. There are hares and Alpine Salamanders, Alpine Apollo Butterfly, and many more.
1
This would be totally impossible to say as there has probably been many hundred thousands who have climbed in the Alps.
There are 27 alps