1. All organisms need energy in order to grow, reproduce, and perform the activities necessary for survival. Where does this energy ultimately come from? 2. How does sunlight energy enter the biotic...

1. All organisms need energy in order to grow, reproduce, and perform the activities necessary for survival. Where does this energy ultimately come from?

2. How does sunlight energy enter the biotic world?

3. On average, how much of the energy at one level of the food chain becomes available to the next level? What happens to the rest of the energy?