Because - hot air is lighter than cold air - and thus it rises.
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More water on TOP of you.
If its proper- the degree of the top is less than the degree of the bottom If its improper- the degree of the top is greater than or equal to the degree of the bottom
Numerator on top; denominator on the bottom.
If numerator (top number) is less than denominator (bottom number), fraction is less than 1. If numerator is more than denominator, fraction is more than 1. If top and bottom are the same number, fraction is equal to 1.
the top adds what the bottom adds. the top subtracts what the bottom subtracts. the top divides what the bottom divides. the top multiplies what the bottom multiplies.