6. P r o d u c e r s Energy mostly enters to the world as sunlight and producers capture it to turn it into food molecules in a process called photosynthesis. They are: plants, algaes and bacteria. Producers are the source of all the food in an ecosystem A producer can make its own food
17. Decomposers Break down wastes and dead organisms, and so complete the cycle by returning nutrients to the ecosystem. (to the soil or water and carbon dioxide to the air and water)