Question 2 Paper type: Paper 2Paper 2 7 marksFigure 1. Trends in aquaculture and fisheries between 1950 to 2005.(Source: UNEP)a) Calculate the mean annual increase in the total amount of fish harvested between 1950 and 2005. (1)b) Identify two reasons for the change in the amount of fish consumed between 1950 and 2005. (2)c) i) Describe TWO environmental impacts of intensive capture fisheries. (2)    ii) Describe TWO environmental impacts of intensive aquaculture. (2)

A fishing community is experiencing a decline in fish stocks due to over-harvesting. The community must decide whether to implement fishing quotas to sustainably manage the fishery, which could lead to short-term economic losses but long-term environmental benefits.   Year Fish Harvest (tons) Economic Impact (USD) Fish Population Decline (%)2019 1000 1,000,000 302020 950 950,000 252021 900 900,000 202022 850 850,000 152023 800 800,000 10Based on the data table, what trend can be observed regarding fish harvest and fish population decline?    A.As fish harvest decreased, fish population decline decreased.B.As fish harvest decreased, fish population decline increased. C.There is no clear relationship between fish harvest and fish population decline. D.Fish population decline remained constant regardless of fish harvest.

Question 3 Paper type: Paper 2Paper 2 5 marksFigure 1. Ocean food web.a) State the source of energy for the ocean food web illustrated in Figure 1. (1)b) Identify two secondary consumers within Figure 1. (2)c) Predict two impacts of overfishing of Arctic cod on the rest of the food web. (2)View example answer and mark scheme

Which of the following is a direct impact of overfishing on biodiversity?a.Improved water qualityb.Loss of marine habitatsc.Increased fish populationd.Enhanced coral reef health

World consumption of fish per capita was 9kg in 1961 and 18.9kg in 2011. Calculate the average percentage increase per year per capita. Only give the numerical answer.

hich of the following is most likely to cause the greatest increase in the corvina population?*2 puntosA decline in the algae populationAn increase in the population of anchoviesA decline in the population of blue fishA decline in crab population