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1 air pollution - PowerPoint PPT Presentation

Supplement 5 History

Supplement 5 History. The Big Bang!. Time Line. A. Important Events 1. Earth was formed 4.6 billion years ago. 2. Homo Sapiens began as a species 60,000 years ago. 3. Agriculture began 12,000 years ago

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450 views • 43 slides

Air pollution

Air pollution. Project done by: Migl? Migl? M . Viktorija Jolita. Air pollution.

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270 views • 18 slides

Global Symposium Project

Global Symposium Project. 8 th Grade 2014. What's the problem?. 1) Air pollution in North Carolina is a serious and persistent problem. Most people think of air pollution only on days when the news announces an air quality alert, warning of high levels of smog.

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147 views • 6 slides

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1 air pollution - PowerPoint PPT Presentation

Supplement 5 History

Air pollution

Global Symposium Project