CAPE Environmental Science Unit 1 · 2011 · Paper 2 · Question 6(d)(iii)

Figure 7 shows total suspended solids (TSS) in quarry effluent before and after passing through four successive settling ponds.

State whether four settling ponds are necessary for adequate pollution control at this quarry, giving one reason to justify your answer.

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