Answer:
(iii) One reason why Pesticide B was used beginning in 2006 through 2012 rather than increasing the amount of Pesticide A could be that Pesticide B was found to be more effective in controlling certain pests that had become resistant to Pesticide A. Additionally, Pesticide B may have had fewer negative impacts on the environment and/or human health compared to Pesticide A.
(iv) A solution to decrease the total amount of chemical pesticides used in Britain for agriculture could be to increase the use of integrated pest management (IPM) techniques. This could involve a combination of methods such as crop rotation, biological control (using natural predators to control pests), and targeted use of chemical pesticides only when necessary.
(v) One potential advantage of integrated pest management over chemical pesticides is that it can be more sustainable in the long-term. Chemical pesticides can lead to the development of resistant pests, which means that farmers have to use increasingly large amounts of pesticides to achieve the same level of control. Additionally, overuse of chemical pesticides can have negative impacts on the environment and human health. Integrated pest management, on the other hand, can be more effective in the long-term by using a variety of methods that do not rely solely on chemical pesticides. This can lead to reduced pesticide use, less pest resistance and fewer negative impacts on the environment and human health.