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  • Tropical forests are sometimes cut down so that humans can use the trees for wood and other products. Then, the cleared land is made into…
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    It’s a Gas! The Exchange of Gases Between the Soil and the Atmosphere

  • Tropical forests are sometimes cut down so that humans can use the trees for wood and other products. Then, the cleared land is made into…
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    It’s a Gas! The Exchange of Gases Between the Soil and the Atmosphere (Spanish)

  • Some kinds of forest fires can be beneficial to the natural environment and to people. Fire is a normal event…
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    Smoke and Mirrors: Detecting the Amount of Gases in Wildland Fire Smoke

  • Some kinds of forest fires can be beneficial to the natural environment and to people. Fire is a normal event…
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    Smoke and Mirrors: Detecting the Amount of Gases in Wildland Fire Smoke (Spanish)

  • Test your knowledge on anaerobic, climate, and the greenhouse effect.
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    Word Search – It’s a Gas!

  • Test your knowledge on compounds, sample size, and vegetation.
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    Word Search – Smoke and Mirrors