To explore the ecological footprint of a modern high-school student.
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Books Swaps
There are many book swapping websites that allow students and readers alike to swap books once they are done with it. This is not unlike buying books, except it's free and you help save the trees at the same time! For example, you might have a rare copy of an old Maths textbook that you no longer use. Through a book swapping website, you could exchange it for the latest Harry Potter novel.
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