“. . . the eastern Andes on one side . . . and the maritime cordillera on the other. Between them there
is an extensive and very lofty plateau, 13,000 to 14,000 feet above the sea, with the lake called
Titicaca . . . . The surrounding mountains form a region of frost and snow. The hardy llamas and
alpacas live and breed amidst the tufts of coarse grass . . . . Besides the grass, there is a lowly
shrub called tola, which can be used as firewood. Quinua belonging to the spinach family, can alone
be raised at the higher elevations, yielding a small grain which, by itself, is insufficient to maintain
human life.”
Cite one example from the quote that explains how the Andean people lived in this harsh environment.