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The sun generates enormous amounts of heat which then travels to the earth, raising the temperature of the earth to that which can sustain life which is at an average of 15oC on the Earth's surface.

The light generated by the sun provides energy for the reaction of photosynthesis without which sugars cannot be synthesized, and therefore food and consequently life cannot exist.

The immense mass of the sun causes it to attract comets, giant meteoroids, larger asteroids etc which can be on a collision course with the earth, thereby reducing our chances of being wiped out like the dinosaurs (who were killed by odds one in a million of a meteoroid of that size crashing into the Earth)

Hope this helps!

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12y ago

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