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Climate Change · Paper 1 — Free Biology HL Practice Questions
1FoundationMCQMitigation strategies and global agreements1 markPaper 1~2 min
Rice paddies are a significant source of atmospheric methane. Which statement best explains why modifying irrigation practices in rice paddies is an effective climate change mitigation strategy?
Solutions
2FoundationMCQCauses and effects of climate change1 markPaper 1~2 min
A student measures oxygen bubble production per minute in Elodea canadensis at 15°C, 25°C, and 35°C, keeping light intensity and CO₂ concentration constant. The bubble rate at 35°C is significantly lower than at 25°C. Which statement best explains this observation?
Solutions
3MasteryMCQMitigation strategies and global agreements1 markPaper 1~2 min
A research team measures net primary productivity (NPP) in three ecosystems over 20 years. Ecosystem A is a mature tropical rainforest with 400 tonnes of biomass per hectare, where growth is balanced by decay. Ecosystem B is a newly planted mangrove forest with rapid shoot and root growth but lower total biomass. Ecosystem C is a peat swamp where waterlogged, anaerobic conditions severely limit decomposition. Which ecosystem most likely has the highest NPP?
Solutions
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