Thinking and Investigating 1. Why do you think there is a link between the beginning of the Industrial Revolution
and increased levels of carbon dioxide in the atmosphere?
2. Why is there a seasonal variation in the amount of carbon dioxide in the atmosphere?
3. Explain how cutting down forests leads to an increase in carbon dioxide levels in the atmosphere?
4. What role do the oceans play in the carbon cycle? 5. Why do you think forests are known as the lungs of the earth? 6. How would the following activities affect the global carbon budget? (a) Using renewable energy sources like wind and solar energy instead of burning fossil fuels.
