All life on the planet and everything in nature is dependent on the sun. Without the sun, there would be no life on the planet. All life is dependent on the sun. Plants convert the sunlight into energy, and all animals need plant life or other animals in order to live. All life in nature is dependent on the sun. We as humans are part of nature. We need sunlight just like everyone else.Sunlight is essential for your life and health. This often brings up the concern of skin cancer. People are told.