Which human activity would most likely decrease the amount of carbon in the atmosphere?

• A. Planting large numbers of trees in deforested areas
• B. Burning fossil fuels for energy production
• C. Increasing automobile usage
• D. Clearing forests for agriculture

Answer: (A)

Verified step by step guidance

1. Understand the role of carbon in the atmosphere: Carbon dioxide (CO₂) is a greenhouse gas that contributes to global warming. Human activities can either increase or decrease the amount of CO₂ in the atmosphere.
2. Analyze the options provided: Each activity listed has a different impact on the carbon cycle. Consider how each activity affects the balance of carbon in the atmosphere.
3. Option 1: Planting large numbers of trees in deforested areas. Trees absorb CO₂ during photosynthesis, reducing the amount of carbon in the atmosphere. This activity would likely decrease atmospheric carbon levels.
4. Option 2: Burning fossil fuels for energy production. This releases stored carbon from fossil fuels into the atmosphere as CO₂, increasing atmospheric carbon levels.
5. Option 3: Clearing forests for agriculture. This removes trees that absorb CO₂ and may involve burning vegetation, which releases CO₂ into the atmosphere. This activity increases atmospheric carbon levels.