Why are cactus formed on deserts?
Cactus remain in the desert because they can survive in harsh environments. Cactus plants have the ability to collect all the water they can get, and store it inside them for months on end. The "thorns" or "pricks" of the cactus, protect the plant from animals who might want to eat it.Cactus is formed in the desert due to scarecity of water, high temperature and less organic matter in the soil.