<span>A warm front is the boundary between a warm air mass and a cold air mass it is overtaking. So a cold front would be the opposite.
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I believe the answer would be something like... there is a drought which causes a decrease in water availability which would then cause the population to decrease. The same thing also happens with food. Hope this helps. :)
The formula for speed is: v=x/t, where v is speed, x is distance, and t is time.
v=27/9
v=3
B) 3 m/s
Hope this helps!!
