Question

use the diagram to help you answer the question.
which of the following are human activities that release carbon? select all that apply.
photosynthesis burning fossil fuels
volcanic activity deforestation

Explanation:

• Photosynthesis: It is a natural process where plants take in carbon dioxide (a form of carbon) from the atmosphere and convert it into organic matter (like glucose) using sunlight. So, it does not release carbon.
• Burning fossil fuels: This is a human - made activity. Fossil fuels (such as coal, oil, and gas) contain carbon. When burned, they react with oxygen to produce carbon dioxide (\(CO_2\)), which is released into the atmosphere.
• Volcanic activity: It is a natural geological process. Volcanoes release gases, including carbon - containing gases like \(CO_2\), but it is not a human activity.
• Deforestation: When trees are cut down (a human activity), the carbon stored in the trees (in the form of organic compounds) is released. If the trees are burned, the carbon is quickly converted to \(CO_2\). Even if they decompose, the carbon is released back into the environment over time.

Answer:

B. burning fossil fuels, D. deforestation