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8 marksHuman Interaction and Ecosystem Investigation

CAPE Environmental Science Unit 1 · 2012 · Paper 2 · Question 1(c)(i)

It was determined that there was a high concentration of phosphate and nitrate in the effluent. Using the information in Figure 1, explain why the effluent concentration resulted in the trend observed in (b).

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Other parts of this question

  1. 1(a)Using an example other than agrochemicals, explain what is meant by the term 'limiting factor'.[4 marks]
  2. 1(b)Using the information provided in Figure 1, describe the trend in population size of the duckweed.[4 marks]
  3. 1(c)(ii)Explain how the variation in the duckweed population may impact on the population of other aquatic species in the same ecosystem.[4 marks]

More practice: the rest of this paper · more Human Interaction and Ecosystem Investigation questions · all CAPE Environmental Science Unit 1 past papers