Because of human (1)………………, the world is changing. Japanese cities stretch for miles
without any (2)……………..; the dense network of freeways in the Netherlands looks
disgusting, and the northeast of the USA is a very (3)……………….. place. But
overpopulation involves more than numbers. Population densities do not reveal that large
parts of countries are not habitable or suitable for (4)……………….. Russia and Canada are
big, but who wants to live north of the 55th parallel? China has its own problems, and most
of the population (5)……………… in the eastern lowlands, where crops can be grown. The
western deserts, highlands, and plateaus do not support (6)…………… farming and are only
suitable for ranching. Depletion of natural resources is also a (7)…………………….
Populous countries have already used up their resources and are forced to import raw
materials (8)……………………… other lands.
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Sinh Học lớp 12
