Biodiversity and the Effect of Human Interaction on Ecosystems


  • 1) The graph below shows how the daily global concentration of carbon dioxide (CO2) has changed in the atmosphere over the past 10 years. Why does an increase in the concentration of CO2 in the atmosphere lead to an increase in global temperatures? 1 Marks



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  • 2) Using your own knowledge, describe the pattern shown in the graph above, and suggest some reasons for these trends 6 Marks



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  • 3) The trends shown in the graph are also associated with decreasing biodiversity. Give the definition of biodiversity 1 Marks


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  • 4) Explain why the rising concentration of CO2 in the atmosphere is associated with decreased biodiversity 2 Marks


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  • 5) Strategies have been introduced to try and reduce the negative effects of humans on ecosystems and biodiversity. Give two examples of these programmes 2 Marks


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  • 6) For fish living in small ponds near farms, rising atmospheric CO2 concentrations is not the only human influence putting their survival at risk. Name and explain the process by which the use of fertilisers by farmers on their fields can result in the death of fish in ponds nearby 4 Marks


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