O Levels Chemistry (5070)•5070/12/O/N/23
Explanation
Matching Strategies to Environmental Issues Steps:
- Identify common environmental issues: global warming (from greenhouse gases) and acid rain (from sulfur emissions).
- Evaluate first column: Strategies to cut emissions causing global warming include reducing non-renewable energy use (likely intended, as reducing renewables worsens issues).
- Evaluate second column: Strategies for acid rain involve low-sulfur fuels to lower SO2 emissions.
- Select row pairing one valid strategy per issue without mismatches.
Why B is correct:
- It pairs reducing non-renewable energy use (lowers CO2 for global warming, per carbon emission laws) with low-sulfur fuels (cuts SO2 for acid rain, tied to Clean Air Act definitions).
Why the others are wrong:
- A: Both strategies target global warming (livestock methane, tree carbon sequestration), not a mixed pair.
- C: Mismatches non-renewable reduction (warming) with planting trees (also warming-focused).
- D: Duplicate of B, but context implies only one correct row; lacks unique validity.
Final answer: B
Topic: Air quality and climate
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