Quelpr
2 marksPollution and Environmental Health

CSEC Human and Social Biology · January 2017 · Paper 2 · Question 2(d)(ii)

A garden borders a river and farming activities may lead to water pollution.

Outline two effects of these pollutants on living organisms in the aquatic ecosystem.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)Complete the concept map by stating the correct labels for (i), (ii), (iii), and (iv).[4 marks]
  2. 2(b)(i)Identify the stage in the cycle at which carbon dioxide enters the food chain.[1 mark]
  3. 2(b)(ii)Identify the stage in the carbon cycle where human activities have a major effect.[1 mark]
  4. 2(c)(i)State two reasons why plants require adequate amounts of nitrogen.[2 marks]
  5. 2(c)(ii)Name two types of soil bacteria that provide nitrogen.[2 marks]
  6. 2(d)(i)Suggest three pollutants that may run off from the garden into the river.[3 marks]

More practice: the rest of this paper · more Pollution and Environmental Health questions · all CSEC Human and Social Biology past papers