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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners receive a labeled plastic film canister containing a material representing a pollutant (i.e. pencil shavings = a beaver's wood chips).

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity (on pages 29-35), learners examine water pollution and filtration.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes