These mountains have deserts nearer to sea level and oak forests further up. Because there are many deep river valleys, the mountains affect the rain. There are many places where the air is very wet. That means many different kinds of plants and animals can live in the Sierra Madre Occidental. Scientists call this biodiversity.
References[change | change source]
- "Sierra Madre Mountain System (Mexico, Central America)". Latin America and Caribbean Geographic. April 10, 2019. Retrieved February 2, 2022.