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6 marksHuman Impact on the Environment

CSEC Biology · January 2020 · Paper 2 · Question 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 ecosystem and for EACH activity, state ONE way by which it increases the carbon levels in the ecosystem.

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Other parts of this question

  1. 4(a)Name the processes labelled A, B, C and D.[4 marks]
  2. 4(c)Suggest THREE practices that can be adopted to reduce the impact of human activities on the carbon cycle.[3 marks]
  3. 4(d)Human activities can lead to an increase in greenhouse gases. Name TWO greenhouse gases other than carbon dioxide.[2 marks]

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