2.3 Biogeochemical cycles Quiz
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5 questions, one answer each
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1. Which is an inorganic store of carbon?
- A. Crude oil
- B. The oceans
- C. A tree
- D. Natural gas
2. A peat bog is drained. What is the most likely effect on carbon?
- A. It becomes a stronger sink
- B. Nothing changes
- C. Aerobic decomposition releases carbon dioxide
- D. Photosynthesis stops
3. What is carbon sequestration?
- A. Burning fossil fuels
- B. Capturing carbon dioxide and storing it in solid or liquid form
- C. Releasing carbon in respiration
- D. Dissolving carbon dioxide in rain
4. Which result of ocean acidification harms oysters?
- A. More carbonate ions available
- B. Higher pH
- C. Fewer carbonate ions for shell building
- D. More oxygen in the water
5. Which technique would make an arable farm more likely to be a carbon sink?
- A. Ploughing more often
- B. Removing hedgerows
- C. Leaving soil bare in winter
- D. Planting hedgerows and cover crops