Figure 7.6 shows the distribution of elevation, in miles, across the earth’s surface. Positive elevation denotes land above sea level; negative elevation shows land below sea level (that is, the ocean floor).
(a) Describe in words the elevation of most of the earth’s surface.
(b) Approximately what fraction of the earth’s surface is below sea level?

Transcribed Image Text:

fraction of earth's surface per mile of elevation M -2 0 2 Figure 7.6 -4 4 elevation (miles)