Question detail
Describe two human activities that increase carbon dioxide levels in the atmosphere.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Carbon dioxide and methane as greenhouse gases
Question
Describe two human activities that increase carbon dioxide levels in the atmosphere.
Answer
Two human activities that increase carbon dioxide levels are deforestation and the burning of fossil fuels. Deforestation reduces the number of trees available to absorb carbon dioxide, while burning fossil fuels releases significant amounts of carbon dioxide into the atmosphere.
Explanation
This question assesses the student's ability to identify and describe specific human activities that contribute to increased carbon dioxide levels. It encourages them to connect their knowledge of environmental science with real-world implications.
Common mistake
Misattributing CO₂ source to burning fossil fuels
Students often think that burning fossil fuels only releases carbon dioxide that was already present in the fuel, ignoring that the combustion process also produces new CO₂ from the oxygen in the air.
Explain that when fossil fuels are burned, the carbon atoms in the fuel combine with oxygen from the atmosphere to form new CO₂ molecules, thereby increasing the total amount of CO₂ in the atmosphere.
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