Adaptations that have this type of plants to survive the lack of water?

It is surprising how living beings in these areas have managed to solve the water shortage , since in these regions rains less than 700 mm / year , including some parts may be years without significant rain (as a reference , occurs in the city of Mexico raining down about 750 mm / year, and in a rainforest fall at least 2 000 mm / year) .

The animals also have various strategies to survive the harsh desert conditions.

Some lay eggs very resistant to dry conditions , which usually survive for years until they again give moisture conditions that allow their development.

The case of mammals , for their extraordinary importance to occupy the two levels of consumers : primary and secondary , mammals in the Chihuahuan Desert numbering about a hundred species of ecological importance and economic.