Quelpr
6 marksHuman Impact on the Environment

CSEC Biology · January 2014 · Paper 2 · Question 5(b)(ii)

In a river near to a farming community, there are numerous dead organisms and an overgrowth of algae.

Discuss THREE ways in which this problem could be remedied.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 5(a)(i)Draw a simplified labelled diagram of the nitrogen cycle to show THREE processes that involve bacteria and ONE process that does not involve bacteria.[4 marks]
  2. 5(a)(ii)State TWO consequences of nitrogen deficiency in plants.[2 marks]
  3. 5(b)(i)Explain how excess nitrate fertilizer may be responsible for the overgrowth of algae and death of the aquatic organisms.[3 marks]

More practice: the rest of this paper · more Human Impact on the Environment questions · all CSEC Biology past papers