As you now know, a healthy ecosystem
should have many types of plants, animals, insects, fungi, and bacteria.
It is also important to remember that a healthy ecosystem has more
plants (primary producers) and decomposers than herbivores and carnivores.
There are also more herbivores than carnivores. Why, you ask?
- it takes many plants (primary producers) to provide food (energy)
to one herbivore
- it takes many herbivores to provide food (energy) to one carnivore
- it takes many decomposers to break down a dead plant, animal,
The picture to the right shows a food pyramid. Arrows show
direction that energy is flowing (the arrow pointing from the primary
producers to the herbivores means that energy is moving from the
plants to the herbivores).