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| Food Chain: |
| A
food chain is a group of different living things,
each of which feeds on the one below it. The
arrows indicate the flow of energy, starting with
the sun and continuing on to a human. A food
chain is limited because a chain doesn't branch
like a web would. |
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| Food Webs: |
| A
food web is the interlocking food chains within a
community. A producer is a plant, which produces
its own food. A first level consumer is an
herbivore. A second level consumer is a carnivore.
In a food chain the relationships are very
linear, but in a food web it all branches out.
For instance, A human could eat a cow, but it
could also eat a plant. With a food chain you
couldn't show that. |
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| The Delicate Balance of
Organisms: |
| If the population of one spiecies
of animals decreases, than a chain reaction
occours and the food chain/web is severly damaged.
For instance if a herbivore speicies became
decreases its population, than there would be an
over-population of producers, and the carnivores
that eat that herbivore would have to find
something else to eat or die. If a scavenger
spiecies decreases in population than the world
would be full of dead bodies. |