Complex sentence: The Saharan ecosystem dominates all the territory of Béni Abbès, flora and fauna are not as extensive as in other parts of Algeria, however, there is a staggering variety of plants and creatures have been found here.
Split into simpler sentences: The Saharan ecosystem dominates all the territory of Béni Abbès. Flora and fauna are not as extensive as in other parts of Algeria, however, a variety of plants and creatures have been found here.