1a
2 marks
Figure 7b is a table and graph. The table shows the data collected on a sand dune transect. The data has been plotted on the graph.
Figure 7c is a sketch of the transect from the data.
Suggest one advantage of locating the graph (Figure 7b) above the transect (Figure 7c).
1b
6 marks
What conclusions can be reached about changes in pH and vegetation along the transect?
1c
3 marks
Suggest how you might evaluate the conclusions reached in such an investigation.
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