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Cycles of Matter. Cycles of Matter: Why? Because we have a fixed amount of STUFF (matter) on this planet, and no new stuff is being added from the universe
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Connect! Why do you need to eat? What happens to the food you eat? Why do you need to breathe? What happens to the oxygen you breathe in? What do all the
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1 Environmental Science 3205 Chapter Five Protecting Spaces unit one
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