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This link brings you to information from the EPA about past climate change. There are many links from this page with great information. I print this page, and the pages from the recent climate change and future climate change links on the left side of the website.
This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of -0001-11-30.
This resource received a 3* rating because it is part of Is Climate Change Caused By Humans, which received a rating of 3-Exemplary in the Curriki Review System and which you can see here: http://www.curriki.org/xwiki/bin/view/Coll_MickiHR/IsClimateChangeCausedByHumans