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In this activity, learners calculate the number of milliliters of water a nearby tree transpires per day.

This three-part lab helps learners understand the essential principles governing diffusion and osmosis.

In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution.

This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi