West Coast Commerical Boats For Sale Why Is It A Necessary Precaution On Commerical Airplanes To Have Oxygen Masks For Every Passenger?

Why is it a necessary precaution on commerical airplanes to have oxygen masks for every passenger? - west coast commerical boats for sale

I need to this question, which consists of an assignment in class tomorrow, because it is!

Also another question,

If you lived on the west coast of South America, which way the wind is blowing.


And the last question,

The Northeastern United States tend to be colder winters of the north-west of the U.S.. Winds contribute to this difference.?