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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

$10 - $20 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

$10 - $20 per group Ages 11 - 18 30 to 45 minutes
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In this activity, learners conduct an experiment to investigate the effect of elevated levels on CO2 on plant growth.

$10 - $20 per group Ages 14 - 18 1 to 4 weeks