Earth Motion3: Our Changing Earth -- Module 1: Earth Cycles -- Student Video Have you ever wondered how the mountains were formed or how the Grand Canyon was created? Earth Motion3: Our Changing Earth contains three complete modules that can help to explain these phenomena. Module 1: Earth Cycles deals with the water, oxygen, carbon and nitrogen cycles. Hands-on activities are given for each section. It all leads to the concept of why these cycles are important, how they work, how human activity disrupts them and what we can do to lighten our impact. Produced in 2010. Get lesson plans for Earth Motion3: Our Changing Earth at www.westernreservepublicmedia.org

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