In the places that are simply sand, there is no vegetation, and so therefor no cactus. Such places included portions of the Sahara desert and the Thar desert in India.
20 percent of the world’s deserts are covered by sand. 50 percent of desert land consists of exposed gravel and pebbles where wind has removed fine-grained material. Oases, areas that receive water from springs or from irrigation, are the only parts of deserts that can sustain crops. Vegetation survives in deserts mostly by long tap roots that reach deep enough to draw from the water table. Other plants aside from cactus that do well in arid environments include sunflowers and the pea family.
No. The only cactus species that grows outside of the Americas, Rhipsalis baccifera, grows in the tropical regions of Africa and Asia, not the desert. Like all Cactus species, R. Baccifera originated in the Americas. It was introduced to its Old World habitat relatively recently, though in pre-Columbian times. Scientists believe it was probably spread by migrating birds.
That means that most of the world’s major deserts, such as the Sahara, the Arabian, the Gobi, and the Great Victoria deserts, do not have any cactus species.
Antarctica is classified as a desert because of the lack of precipitation. There are no cacti growing on the continent, but hardy species of lichen and kelp manage to survive there.
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