ecosystems

Dynamic Ecosystems PowerPoint



=Abiotic Factors=

=Biotic factors= [|http://www.youtube.com/watch?v=O3CZFfyed3M&feature=player_embedded#at=121] || Discusses
 * media type="custom" key="6795135" || //**What is an ecosystem?**//
 * //**How does an ecosystem works?**//
 * **//nutrients in and ecosystem//**
 * **//trophic levels//** || media type="youtube" key="LLifx8Eppbo?fs=1" height="385" width="480" ||

Resources
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//Sustainable Ecosystems// []