Describe how and why proximity to the sun is so important in sustainability of life?

Nothing is more important to us on Earth than the Sun. Without the Sun's heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.

because the light is a great source of energy for the plants to survive. (i hope this )