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Earth Systems Science Core
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The Atmosphere And Life On Earth

Earth's atmosphere is significant for organisms that live here. Without this atmosphere life as we know it would cease to exist. Earth's organisms interact with the atmosphere, often helping other organisms survive. Throughout history the atmosphere has changed. Some changes may have been less beneficial than others to life on Earth.

There are concerns that humans are causing problems with Earth's atmosphere. As you explore this unit, you will compare the ways humans may help or hurt the atmosphere. Good luck making up your mind about how humans affect the atmosphere.

Carbon? ... Who Needs Carbon? Which Came First???
The Nitrogen Cycle Ch... Ch... Changes!
Have Humans Changed the Carbon Cycle?
What Does It Mean?
How Do Interactions Change Weather? Where Do I Look?
In the O-Zone  
Review science lab safety rules here.

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Teachers should view the Teacher Site Map to relate Sci-ber text and the USOE Earth Systems Science core.


Updated October 24, 2008 by: Glen Westbroek

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