Question

why hills are cooler then plains

Answer 1

because when we go up, the temperature falls due to change in altitude but in plains, there is no change in temperature. this hills are cooler than plains.

Answer 2

hii frnd,

there is a decrease of 1°C for every 166m rise in height, because temperature decreases as we move to higher altitudes. so, hills are cooler than plains.

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