Quelpr
4 marksWater and Land Pollution

CAPE Environmental Science Unit 2 · 2010 · Paper 2 · Question 8(b)(ii)

Outline how TWO of the pollutants you mentioned in (b)(i) above impact the environment.

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. 8(a)(i)At what distance from the sewage plant is the dissolved oxygen concentration at its LOWEST?[1 mark]
  2. 8(a)(ii)What is the LOWEST dissolved oxygen concentration in the river?[1 mark]
  3. 8(a)(iii)Given that fish must have a minimum of 3 mg/L dissolved oxygen for survival, for what distance downstream of the sewage treatment plant is the river completely…[1 mark]
  4. 8(b)(i)Copy and complete Table 2 to show the name and ONE source of THREE different water pollutants EXCEPT nitrates.[3 marks]
  5. 8(c)Explain how a shark can exhibit possibly dangerous levels of mercury, if it does not come into contact with actual metallic mercury, and the concentration of…[5 marks]
  6. 8(d)(i)You have been asked to recommend a nitrate-measuring method for your new laboratory. Assuming that you only need to consider the data provided in Table 3,…[4 marks]
  7. 8(d)(ii)Before you can make a final decision on which method to use for your laboratory, what is the MOST important factor that you must take into account?[1 mark]

More practice: the rest of this paper · more Water and Land Pollution questions · all CAPE Environmental Science Unit 2 past papers