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Sunlight carries energy, which warms up the Earth and is the driving force behind all our weather and climate. As the ground is heated by sunlight, it begins to radiate, but being too cool to radiate even a dull red, its radiation is in the infra-red range.unlight carries energy, which warms up the Earth and is the driving force behind all our weather and climate. As the ground is heated by sunlight, it begins to radiate, but being too cool to radiate even a dull red, its radiation is in the infra-red range.
Also, the sun heats up a water resource and it evaporates above to the cooler air (yes the air above is still cooler because of how separated the molecules are) and cools down to turn into clouds. It becomes very condense and it rains. It is all one big cycle caused by the unequal heating of earth's surface.