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In this environmental science lesson, learners will examine the dangers of mercury and how humans contribute to growing mercury emissions on Earth.

In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).

In this environmental science lesson, learners will examine hazardous chemicals and their effects on human health and the environment.

This experiment is designed to illustrate how fluids, including water, have the ability to flow.