Question

why there is a variation of temperature found all over the Earth

Answer 1

due to the curvature of earth and temperature belts of earth the distribution of sunrays is inclined and there i s variation

Answer 2

temperature of earth depends on the rays of sun falling on earth

at the poles there r least no. of of rays so temperature remains cool

on the the equater maximum rats r received so remains hot

so it changes in whole earth