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In this activity, learners explore clouds and how they form.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates.

Learners observe a simple balloon model of an electrostatic precipitator. These devices are used for pollutant recovery in cleaning industrial air pollution.

In this activity (on pages 29-35), learners examine water pollution and filtration.

In this activity, learners make a model of a pollution spill that occurred at Bangs Lake in Mississippi and measure water quality parameters in their model.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.