Ecosystems

Ecosystem Unit Essential Questions:

 * What happens to ecosystems when the environment changes?
 * How do organisms interact in groups so as to benefit individuals?
 * What evidence shows that different species are related?

SAS Databases for Research:

 * PebbleGo Animals & Earth and Space for ESL and children reading below grade level
 * http://www.pebblego.com/content/science/pgo_player.phpl
 * Britannica Encyclopedia Online
 * Britannica Images

Web Resources:
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