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4 marksFood Chains, Food Webs, and Decomposers

CSEC Biology · May/June 2019 · Paper 2 · Question 2(a)

Figure 3 is a diagram of the carbon cycle.

State the name of the processes numbered I to IV.

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Other parts of this question

  1. 2(b)(i)Name ONE type of organism responsible for decomposing organic waste.[1 mark]
  2. 2(b)(ii)Explain TWO ways in which the type of nutrition carried out by the organism named in (b)(i) is different from that carried out by plants.[4 marks]
  3. 2(b)(iii)State TWO reasons why the type of organism named in (b)(i) is important in an ecosystem.[2 marks]
  4. 2(c)(i)Suggest TWO reasons why carbon dioxide is described as a greenhouse gas.[2 marks]
  5. 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.[2 marks]

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