During cold weather, a farmer rearing rabbits for meat stops heating the building where the rabbits are kept. The rabbits are still given the same mass of food each day. Which prediction about the rabbits' growth, with its explanation, is correct?
They gain more body mass, because in colder air they use less energy in respiration
They gain less body mass, because more of their food is used to keep their bodies warm
They gain less body mass, because the heating was supplying them with energy for growth
They gain the same body mass, because they are still given the same mass of food
87 exam-style questions on AQA GCSE Biology 7.5 Food production, covering 7.5.1 Factors affecting food security, 7.5.2 Farming techniques, 7.5.3 Sustainable fisheries, and 7.5.4 Role of biotechnology. Each one has a worked solution and a mark scheme showing where the marks go.