As average global temperatures rise, some insect pests are spreading into countries where they were not found before. Why could this reduce food security in these countries?
The pests may have no natural predators there, and crops may lack resistance.
Higher temperatures will reduce the rate of photosynthesis in all of the crops.
The pests will cause mutations in the crops that reduce their yield at once.
The crops will make antibodies more slowly in the warmer conditions there.
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.