1)What do you think life depends on? 2)Where does energy come from? 3)What happens to life if there is no food,or source of energy? 4) Are there any ways to back on our energy use? 1) What do you think life depends on? 2) Where does energy come from? 3) What happens to life if there is no food, or source of energy? 4) Are there any ways to cut back on our energy use?