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In this activity, learners explore the different salinities of various sources of water by taste-testing.

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

In this group activity, learners act out key stages of the "ocean carbon cycle" (also known as the "carbonate buffer system") through motions, rearranging blocks and team tasks.

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 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities.

In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best.