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Learners use red cabbage juice and pH indicator paper to test the acidity and basicity of household materials. The activity links this concept of acids and bases to acid rain and other pollutants.

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

Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

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).

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

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

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

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

Learners build devices from rubber bands to test for invisible air pollutants.

In this outdoor activity, learners explore how a surprising number of animals use human-made litter, such as cans and crumpled paper, to find food and shelter in their environment.