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As a model of acid rain, learners water plants with three different solutions: water only, vinegar only, vinegar-water mixture.

Learners observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution.

Many people get water from a source deep underground, called groundwater.

In this activity, learners build one or more edible coral polyps and place them together to form a colony.

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, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.

Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?