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Who Eats What?
Herbivores eat only plants.
Carnivores eat only other animals.
Omnivores eat both plants and animals, like bears and people!
Many food chains link together to make a food web.
The Energy Pyramid
Plants capture energy from the sun.
Only about 10% of the energy passes to the next level. The rest is used or lost as heat.
That's why there are many plants, fewer plant eaters and only a few top predators.
Keeping Nature in Balance
Every living thing in a food web depends on others.
If one animal disappears, the whole web can change.
When wolves returned to Yellowstone Park, rivers and forests changed too!
