As people in a country become wealthier, they often eat more meat. Why can this reduce food security?
Farm animals release waste that stops nearby crops from growing.
More crops are fed to animals instead of being eaten by people.
Meat contains less protein than the crops that are fed to animals.
Farm animals pass more pathogens to crop plants than people do.
127 exam-style questions on OCR GCSE Biology 6.2 Feeding the human race, covering 6.2.1 Biological factors affecting food security, 6.2.2 Agricultural solutions to growing demand, 6.2.3 Selective breeding, 6.2.4 Genetic engineering, 6.2.5 Steps in genetic engineering, 6.2.6 Benefits and risks of gene technology in agriculture, and 6.2.7 Biotechnological solutions to growing demand. Each one has a worked solution and a mark scheme showing where the marks go.