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Sustainability and Change · Paper 1 — Free Biology SL Practice Questions
1FoundationMCQRenewable resources and ecological conservation1 markPaper 1~2 min
A village depends on a nearby forest for firewood. The forest has been logged at 5 hectares per year for 20 years, while natural regrowth adds 2 hectares per year. The village council proposes to classify the forest as a renewable resource. Which condition must be met for this classification to be valid?
Solutions
2MasteryMCQSustainable agricultural practices1 markPaper 1~2 min
A study compares two adjacent fields over 10 years. Field X uses conventional tillage and synthetic fertilisers; Field Y uses no-till farming with cover crops and manure. The data are shown below.
Year 1 — 12 — 5.5 — 2 — 4.8
Year 10 — 15 — 4.2 — 1.5 — 5.3
Which statement best explains why Field Y's crop yield increased over 10 years while Field X's yield decreased?
Solutions
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