A farmer uses land that previously grew food crops to grow crops for biofuel. No extra farmland becomes available.
Which outcome could reduce food security?
Less land grows fuel crops, so less food can be produced.
More land grows food crops, so more food can be produced.
Less land grows food crops, so less food can be produced.
More land grows fuel crops, so more food can be produced.
38 exam-style questions on Edexcel GCSE Biology 9.2 Energy transfer and biodiversity, covering 9.2.1 Energy transfer between trophic levels, 9.2.2 Efficiency of energy transfers, 9.2.3 Human interactions and biodiversity, 9.2.4 Benefits of maintaining biodiversity, and 9.2.5 Biological factors affecting food security. Each one has a worked solution and a mark scheme showing where the marks go.