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Hot Arid Zone
The hot arid zone in the western
United States and parts of Mexico
has warm, dry winters. The summers
are very hot and dry. Little rain falls
during most of the year. During the
summer thunderstorms can bring
heavy rains that sometimes cause flash
floods. The hot arid zone supports
many kinds of plants that are adapted
for dry conditions, including cactus,
mesquite, and yucca.
Interior Continental Semiarid Zone
The semiarid zone has warm spring and summer weather with
thunderstorms. The winters are cold. The plants living here include
sagebrush and many kinds of grass. This zone stretches from western
Canada into Mexico.
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