What are the environmental pressures of the plant the cactus? What are their Variations?

The best-known threat comes from human pressures, driven by agriculture, residential, and commercial expansion into cactus habitats. But the worst offender, the scientists were surprised to find, is the illegal trade of cactus plants and seeds, affecting 47 percent of the threatened species. The pressures of drought and other animals, as well as lack of water are environmental pressures of the Cactus. The environmental pressures of the cactus are the variations are Bunny Ears Cactus, Chin Cactus, Saguaro Cactus, Old Lady Cactus, Star Cactus, Easter Cactus, Christmas Cactus, and Moon Cactus