<p><strong>Fig. 1.8.1.</strong> Equal-area map with superimposed grid. One square at the equator represents a surface area of about 1,240,000 square kilometers. On this map land is grey even if it is covered by ice. This map does not show sea ice.</p>

Fig. 1.8.1. Equal-area map with superimposed grid. One square at the equator represents a surface area of about 1,240,000 square kilometers. On this map land is grey even if it is covered by ice. This map does not show sea ice.

Image by Byron Inuoye