Quelpr
4 marksEcology, Niches, and Interactions

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

Explain how the variation in the duckweed population may impact on the population of other aquatic species in the same ecosystem.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

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)(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…[8 marks]

More practice: the rest of this paper · more Ecology, Niches, and Interactions questions · all CAPE Environmental Science Unit 1 past papers