I googled it and it said 50-100 billion
The north american air mass is a large body with generally uniform temperature and humidity. the area from which air mass originates is called source region. the air mass source regions range from extensive snow covered polar areas to deserts to a tropical oceans.
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Gulf war period:
August 2, 1990 - February 28, 1991
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I really dont know what you mean by this question. can you explain it more in order for me to get it and answer your question please.
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tha valuse is is the rules nad everything rules related
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