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

Learners build a simple aneroid barometer to learn about changes in barometric pressure and weather forecasting. They observe their barometer and record data over a period of days.

In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation.

In this activity, learners create a biosphere in a baggie.

Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

April showers bring May flowers, but what do coastal storms bring?

In this laboratory exercise, learners will discover how many different plant hosts they can find that are infected by the same genus of a powdery mildew fungus, or how many different genera of powdery