Monday, January 16, 2012

Food Webs

Food webs are a great way to show how energy travels in an ecosystem.

Before you start drawing out your food web, it's important to look at who is in your food web.
Do you have producers (organisms that make their own food) or consumers (organisms that have to consume their food)?   What type of consumers do you have? Primary/Secondary/Tertiary?  Herbivore/Omnivore/Carnivore?
When you have all that figured out, make sure you have the two main components of a food web - sun (the source of energy) and decomposers (which break down matter and help the cycle start again).
Then ALWAYS draw the arrow to the thing that gets the energy.  If you and an apple were in a food web, there would be an arrow going from the apple to you.  Imagine that the arrow is going right into the mouth of the thing that is going to get the energy.

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