Plants will be from arid locations around the world, depending on species in the selection.
Aloes and similar species are from hot, dry, sunny locations close to the equator. They are adapted to intense sunlight and very high daytime temperatures. Like most succulents, they only open their leaf pores at night to exchange carbon dioxide and oxygen - this is to conserve moisture. As such, they require a period of darkens every day in order to photosynthesize.