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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.

In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

In this life science activity (page 8 of the PDF), learners explore the carbon cycle by mixing yeast, sugar and water.