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Understanding the Carbon Cycle: Human Impact and Ecosystem Dynamics

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arawn
11 diapositives · 257 Views · Jul 18, 2014

This activity focuses on exploring the carbon cycle within ecosystems, emphasizing the flow of carbon from giant kelp to sea urchins. Teachers can modify the accompanying PowerPoint slides to tailor the lesson for their students. Key discussions include analyzing food webs, identifying carbon sources and sinks, and examining how human activities have altered the carbon cycle from pre-industrial to post-industrial times. Suggestions are provided for classroom engagement, promoting deeper understanding of ecological balance and carbon management.

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  1. Activity 8 Carbon Cycle

  2. LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the Science and Global Issues SEPUP course to customize the unit to match their students’ learning levels or to insert additional teaching aides. Modified slides may be used only by the modifying teacher in his or her classroom, or shared with other teachers of Science and Global Issues within the teacher’s school district, with these same restrictions. Modified slides may not be taken out of the classroom or distributed to any non-student person or organization. Except for use with students in the classroom, modified slides may not be published in printed or electronic form, including posting on the Internet. Only text may be modified: photographs and illustrations on the slides may not be modified in any way except to change their size. DISCLAIMER OF WARRANTY. THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (“University”) MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. University will not be liable for any costs, damages, fees or other liability, nor for any direct, indirect, special, incidental or consequential damages (including lost profits) with respect to any claims by the purchaser or user of Science and Global Issues or any third party on account of or arising from the use or modifications to the slides. Client acknowledges and accepts that University services are provided on an as-is basis.

  3. With your partner, look at your food web from Activity 7. • How would you describe the flow of carbon from the giant kelp to the sea urchin? • Where do the carbon-containing molecules in the giant kelp come from? Go to?

  4. Read the introduction. • How is a food web related to the carbon cycle?

  5. Challenge • How does human activity affect the movement of carbon through the carbon cycle?

  6. Before you begin the simulation, examine the two figures in the Activity. What differences do you notice between the pre- and post-industrial scenes?

  7. What were the major differences between the pre- and post-industrial carbon cycles?

  8. Pre-industrial Carbon Cycle

  9. Post-industrial Carbon Cycle

  10. Revisit the Challenge • How does human activity affect the movement of carbon through the carbon cycle?

  11. Key Vocabulary • carbon cycle • carbon reservoir • cellular respiration • organisms • photosynthesis