How does the sun enable life on earth?

Well although this question sounds difficult, it is acctully very simple. the Sun is something that provides plants to grow which provides food for animals, which provides Humans with food, it also gives us vitamin D. The sun is a very very large planet which in the very far futrue will eventually become closer to The Earch which will result in all the water drying up and clearing out the human race, plants, animals ect. Eventually it will End the World.