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| As you can see, the tree there is the source of our lives since they are the one that produces oxygen for us to live. So we must preserve them. | |
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| So that's why they always put the sign to recycle, so we can preserve the trees and save our future and the world. | |
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| Okay class, tommorow we are going on a field trip to learn more about global warming. So, prepare yourselves. | |
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The next day, they all went to the location of the field trip by riding a ship.
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