A Guide to the Miraculous Cactus World

Speaking about desert cactus species we can name the following: ariocarpus, carnegiea, cephalocereus, cephaloceus, echinocactus, ferocactus, opuntia, and some others.
When we hear the word “desert” we usually imagine Sahara or Kara-Kum with their scorching sand-dunes devoid of any vegetation. But the soil of stony deserts of Central and South America is very rich in all [...]

The word savanna usually means vast territories of grass plains, covered with herbage, isolated islets of undersized trees and bushes. Its distinctive features are a long dry period without rain falling on winter and spring months, and plentiful rains and thunderstorms in summertime. Fluctuations in temperature reach 20 °C and more.
Such climate is considered to [...]