A new crop pathogen spreads through a farming region.
How is this most likely to affect food security?
It increases food supply by reducing crop growth.
It increases food supply by increasing crop disease.
It reduces food supply by reducing crop yield.
It reduces food supply by decreasing food demand.
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.