Energy flows through an ecosystem as animals eat plants or other animals in a complex food web.
- The source of all energy comes from the green plants changing sunlight into food through the process of photosynthesis. There are more plants than any other living thing because they are the bottom of the food chain. They provide the energy for everything else. They are the PRODUCERS.
- Some energy is lost each time an animal eats.
- Because there is energy lost at each level of the food chain, it takes a lot of plants to keep one big predator fed up the chain. Because there are fewer animals as you move up the food chain, it is really a food pyramid with the big carnivores needing to eat the most and so being the rarest of the animal kingdom. Because animals eat so many things, the food chain has many overlapping parts, so is really a FOOD WEB.
All this information and the pictures below are copied from this web:
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