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Human Impact on the Environment · CSEC Biology

34 past-paper questions on Human Impact on the Environment, part of Living Organisms in the Environment, from every CSEC Biology paper on Quelpr.

Practise Human Impact on the Environment
  1. 2(a)(ii)4 marks· Biology Q2 2(a)(ii)State TWO activities of humans which may have a negative impact on species diversity and TWO measures that may be taken to reduce the impact of these activities.
  2. 2(c)2 marks· Biology Q2 2(c)Outline TWO outcomes of the removal of trees by cutting and burning.
  3. 2(c)(i)2 marks· Biology Q2 2(c)(i)Suggest TWO reasons why carbon dioxide is described as a greenhouse gas.
  4. 2(c)(ii)2 marks· Biology Q2 2(c)(ii)With reference to the carbon cycle, suggest TWO strategies individuals can use to reduce the amount of carbon dioxide in the atmosphere.
  5. 2(d)2 marks· Biology Q2 2(d)Suggest TWO ways in which small island states such as those in the Caribbean may be affected by large-scale climate change.
  6. 2(e)(i)2 marks· Biology Q2 2(e)(i)Outline TWO ways in which the improper disposal of household waste contributes to land pollution or water pollution.
  7. 2(e)(ii)2 marks· Biology Q2 2(e)(ii)Suggest TWO ways by which people could dispose of their household waste in an environmentally friendly manner.
  8. 3(b)(ii)2 marks· Biology Q3 3(b)(ii)Suggest TWO benefits of placing a ban on the smoking of cigarettes in public places.
  9. 3(d)3 marks· Biology Q3 3(d)Give THREE biological reasons why forests are important.
  10. 4(b)6 marks· Biology Q4 4(b)Recently, there has been an increase in human activities which resulted in the increase of atmospheric carbon dioxide. Suggest THREE human activities that could have contributed to the increasing levels of carbon in the…
  11. 4(b)6 marks· Biology Q4 4(b)Describe the impact of cutting down or burning large areas of forest on the recycling of carbon.
  12. 4(b)(ii)7 marks· Biology Q4 4(b)(ii)Suggest TWO reasons why biological control is a preferred method of reducing pest populations compared to the use of pesticides.
  13. 4(c)3 marks· Biology Q4 4(c)Suggest THREE ways in which humans can make changes in their day-to-day activities to reduce the amount of carbon in the atmosphere.
  14. 4(c)4 marks· Biology Q4 4(c)Scientists predict that global temperatures will continue to rise over the next decade. State TWO factors that have contributed to rising global temperatures, and state TWO negative effect of rising global temperatures…
  15. 4(c)3 marks· Biology Q4 4(c)Suggest THREE practices that can be adopted to reduce the impact of human activities on the carbon cycle.
  16. 4(c)3 marks· Biology Q4 4(c)Explain the effect of cutting and burning forests on the operation of the carbon cycle, and on the environment.
  17. 4(c)(ii)1 mark· Biology Q4 4(c)(ii)Some farmers choose to use chemical fertilisers, while others use natural fertilisers. Suggest TWO disadvantages of the use of chemical fertilisers.
  18. 4(d)6 marks· Biology Q4 4(d)Outline THREE reasons for leaving ‘green spaces', such as parks and woodlands, within crowded cities, even when there may be a shortage of land for housing and industrial development.
  19. 4(d)2 marks· Biology Q4 4(d)Human activities can lead to an increase in greenhouse gases. Name TWO greenhouse gases other than carbon dioxide.
  20. 5(b)6 marks· Biology Q5 5(b)Propose ONE argument to support this plan and TWO arguments against it.
  21. 5(b)(i)9 marks· Biology Q5 5(b)(i)Sometimes human activity abnormally affects natural cycles. Suggest TWO ways in which human activity contributes to an abnormal rise in levels of atmospheric carbon dioxide.
  22. 5(b)(i)4 marks· Biology Q5 5(b)(i)Suggest FOUR precautions residents must take to preserve the pond as a natural habitat.
  23. 5(b)(i)3 marks· Biology Q5 5(b)(i)Explain how excess nitrate fertilizer may be responsible for the overgrowth of algae and death of the aquatic organisms.
  24. 5(b)(ii)9 marks· Biology Q5 5(b)(ii)Suggest ONE likely consequence of abnormally high carbon dioxide levels on ecosystems.
  25. 5(b)(ii)6 marks· Biology Q5 5(b)(ii)Discuss THREE ways in which this problem could be remedied.
  26. 5(b)(ii)2 marks· Biology Q5 5(b)(ii)After a period of heavy showers an algal bloom appears in the pond. Suggest a reason for this increase in the population of algae in the pond.
  27. 5(b)(iii)9 marks· Biology Q5 5(b)(iii)Suggest TWO ways in which carbon dioxide levels can be controlled.
  28. 5(b)(iii)2 marks· Biology Q5 5(b)(iii)Explain ONE possible consequence of the rapid increase in algae population.
  29. 5(c)3 marks· Biology Q5 5(c)Explain the effect on the carbon cycle of cutting and burning large areas of mangrove trees across the Caribbean.
  30. 5(d)(i)2 marks· Biology Q5 5(d)(i)Identify TWO OTHER human activities that result in pollution.
  31. 5(d)(ii)2 marks· Biology Q5 5(d)(ii)Identify TWO effects of polluted waterways on aquatic life.
  32. 6(b)(i)6 marks· Biology Q6 6(b)(i)Outline THREE advantages and THREE disadvantages of this method of biological control compared to the use of chemicals.
  33. 6(b)(iv)9 marks· Biology Q6 6(b)(iv)Describe TWO ways in which the natural balance in a community may be disrupted.
  34. 6(c)3 marks· Biology Q6 6(c)Suggest THREE ways by which human activity could adversely affect an oyster population living in a mangrove swamp.

Related topics in Living Organisms in the Environment