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The top documents tagged [acid rain causes]
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acid rain causes
Humans' effect on ecosystems
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POLLUTION AND SOLUTION
139 views
Acid Rain in the Adirondacks By: Kaydee Oliver December 8, 2011.
213 views
With: Tay Zonday
34 views
Air Pollution
25 views
Acid Rain in the Adirondacks By: Kaydee Oliver December 8, 2011
41 views