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

In this activity on page 60, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris.

Learners complete a series of hands-on and investigative activities to explore cumulus clouds.

In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.