Water Pollution (DP IB Environmental Systems & Societies (ESS): SL): Exam Questions

One parameter that can be measured in order to analyse the quality of a particular aquatic ecosystem is turbidity.

Explain what is meant by the term turbidity.

Outline how turbidity is measured.

The boxes below show a number of pollutants and the ways that they affect ecosystems.

Join each pollutant to the effect that it creates. 

The figure below shows the positions of four farms and the concentrations of nitrate at different points in a river.

Identify which farm is likely to have been using too much fertiliser on its land.