Question detail
How does improving energy efficiency contribute to reducing carbon footprints?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Carbon dioxide and methane as greenhouse gases
Question
- A. By increasing the use of fossil fuels
- B. By decreasing the amount of energy needed for tasks
- C. By promoting the use of non-renewable resources
- D. By encouraging higher energy consumption
Answer
The correct option is By decreasing the amount of energy needed for tasks. This answer is correct because it matches the approved learning objective to describe how improving energy efficiency can reduce carbon footprints in the subtopic The carbon footprint and its reduction.
Explanation
The correct option is By decreasing the amount of energy needed for tasks. By decreasing the amount of energy needed for tasks is correct because it directly supports the approved learning objective to describe how improving energy efficiency can reduce carbon footprints. This belongs to the subtopic The carbon footprint and its reduction within Carbon dioxide and methane as greenhouse gases, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from The carbon footprint and its reduction.
Common mistake
Misunderstanding Energy Efficiency
Students often confuse energy efficiency with energy conservation, thinking they are the same.
Clarify that energy efficiency refers to using less energy to provide the same service, while energy conservation involves reducing energy use altogether.
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