Essay/Term paper: The namib desert
Essay, term paper, research paper: World History
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The Namib Desert
5/13/96
Period 6
The Namib Desert is a parched and rippled desert, an endless expanse.
It stretches along the wouthwest coast of Africa from Angola in the north,
through Namibia, into South Africa. The name Namib means "emptiness." About
1,700 km (1,060 mi long and 100 km (60 mi) wide, the desert is bordered on the
west by the Atlantic Ocean. The Namib has an approximate area of 170,000 sq km
(65,640 sq mi). It rises from sea level 914 m (3,000 ft). Temperatures average
16 deg C (60 deg F). Sands, varying from yellow to red in color, form dunes
reaching 240 m (800 ft) in height. The annual rainfall averages only 25 mm (1
in), but high humidity results in fog and dew. In the north deeep canyons have
been cut by streams. The area's main rivers, the Orange and the Cunene, follow
the southern and northern borders, respectively, of Namibia. One river, the
Queeseb, is made of water collected from over 160 km (100 mi) inward. The
Queeseb causes water holes, for which many organisms rely on for water besides
the actual river itself. Acacia trees grow along the rivers, and short grasses
and succulents thrive everywhere. One of the most important animals of the area
is the baboon. The baboons excavate for underground water that many other
animals depend on. There are many other animals that have adapted to live in
the Namib desert farther away from the rivers and streams including 45 species
of lizards and more than 200 species of beetles. The nocturnal gecko, like many
other animals, burrows in the sand to escape the days heat, 77 deg C (170 deg F).
The palmado gecko drinks the moisture that forms on its own body from the fog
and dew, as does the sidewinder snake. The sidewinder has adapted a special way
of moving in the loose sand which gives it its name. The backflip spider uses a
mixture of sand and silk to create shade to keep it cool. Some beetles extract
moisture from trenches made in dunes. Much of this knowledge about the animals
of the Namib desert is made possible by a research institute in the desert that
was established in 1963. The Namib desert is a harsh biome to live in, but
organisms have still adapted to life there and formed their own unique
ecosystems.