Passage V

Seashore cliffs often lose rock or sediment to wave erosion. Figure 1 shows cliff compositions; cliff heights, in meters (m); and the net change in mean high water mark (MHWM), in m, from 1880 to 1970 along a section of shoreline. A net negative change in MHWM indicates a net loss of rock or sediment and a net positive change indicates a net gain of sediment.

Table 1 shows the percentage of a year that vertical sections of a cliff are exposed to wave erosion.

Figure 2 shows Cliff E and F erosion rates, in cm/yr, as they relate to percentage of a year that a cliff section is exposed to wave erosion.

28. According to Table 1, which of the following figures best represents the relationship between the height of a cliff section and the percentage of a year that a cliff section is exposed to wave erosion?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

From table 1, it can be seen that the higher the cliff section height, the smaller the percentage of a year cliff section is exposed to wave erosion. So exclude H & J;

Look at table 1 again, and find that the lower the height, the faster the percentage decreases. When the height is higher, the percentage change is much smaller, so you should choose F