Why do we need the sun?

Quick Answer. Humans, animals and plants on Earth need the sun because it provides most of the energy required to survive in this solar system. Earth would be a very cold and lifeless planet if it did not get its light and heat from the sun. read more

Answer 2: We definitely need the sun to survive, for many reasons. Without the sun, our planet would get extremely cold, and all living things on it would die. Plants use the sun's energy for photosynthesis, which is the process they use to make nutrients. read more

Learn all of the vital roles the sun plays in ensuring the possibility of life on our planet. read more