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

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

Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity.

In this activity, learners use rice grains to model the composition of the atmosphere of the Earth today and in 1880. Learners assemble the model while measuring percentages.

In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life.

In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.