Fishing boats catch cod using nets. New rules mean that the holes in the nets must be made larger.
Explain how using nets with larger holes helps to maintain the cod stock.
A fishing quota limits the mass of cod that each boat can catch.
Give one disadvantage of fishing quotas for the people who work on fishing boats.
Give one reason why fish stocks need to be conserved.
42 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.