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Food Chains and Food Webs

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julie sippola

on 17 March 2014

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Transcript of Food Chains and Food Webs

Food Chain and Food Web
Food chains are diagrams scientists use to show how energy and nutrients pass from one organism to another in an ecosystem.
The arrows show the path the energy is flowing.
The sun is giving it's energy to the grass, the grass is giving it's evergy to the bug, the bug is giving it's energy to...
***All energy in an ecosystem starts with producers**
Organisms can be classified as:
Producers-plants that make their own food. They don't rely on other organisms to get food.
What is this process of a plant making it's own food called?
Consumers
-Organisms that rely on other organisms to get their energy from
Scavengers feed on dead organisms to get energy.
Food webs are diagrams that show how different food chains in a community are linked together.
Can you think of a food that doesn't come from plants?
All parts of a food web and chain are linked together. If one thing is removed, there could be disastrous results.
Can you guess what type of organism each of these are?
What would happen to this web if the impala disappeared?
Food webs are diagrams that show how different food chains in a community are linked together.
Producers
Organisms can also be classified as consumers.
http://www.misterteacher.com/science/food%20chain2.swf
http://cet.pbslearningmedia.org/resource/hew06.sci.life.reg.foodweb/energy-flow-in-the-coral-reef-ecosystem/
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