A 12‑hectare coniferous forest in the Himalayas absorbs 600 tonnes of CO2 per year. How much CO2 (in kilograms) does it absorb per square metre annually?
Answer
5 kg/m²
The correct answer is 5 kg/m² — Divide total kg by total area: 600,000 ÷ 120,000 = 5 kg/m².
Step-by-step solution
- Convert tonnes to kilograms: 600 t = 600,000 kg.
- Convert hectares to square metres: 12 ha = 120,000 m².
- Divide total kg by total area: 600,000 ÷ 120,000 = 5 kg/m².
Common mistake: Using tonnes instead of kilograms or not converting hectares
Concept tested: Carbon sequestration per unit area
Published · How this solution was prepared and checked
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