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greenhouse effect - Understanding Global Change
Amazon.com: The Greenhouse Effect - Classroom Science Poster: Prints: Posters & Prints
What Is the Greenhouse Effect? | NASA Climate Kids
Calen e Andres. The greenhouse effect is when greenhouse gases( a series of gases in the athmosphere) traps the sun´s rays when it comes to the earth, - ppt download
Greenhouse effect - Wikipedia
Climate Change: Green House Effect | Climate Connection
Quiz on Greenhouse Effect
The Greenhouse Effect | NASA Space Place – NASA Science for Kids