hello dear, do you have any experience of a desert?  is a barren area of landscape where little precipitation occurs 
Oh cool! Where do they usually occur?
they consequently live conditions and hostile for plant and animal life.
Really? Interesting! What else?
Desert
A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one-third of the land surface of the world is arid or semi-arid. This includes much of the polar regions where little precipitation occurs and which are sometimes called polar deserts or "cold deserts". Deserts can be classified by the amount of precipitation that falls, by
size allows them to produce large numbers of offspring when suitable spawning conditions occur and to make up for years of poor conditions. Adult green sturgeon do not spawn every year and only a fraction of the population enters freshwater where they might be at risk of a catastrophic event in any year. The widespread ocean distribution of green sturgeon ensures that most of the population at any given time is dispersed among areas where they are not vulnerable to catastrophic losses.
The ecology and life history of green sturgeon have received little study, evidently