The Chihuahuan Desert of the United States and Mexico may be the most biologically diverse deser in the world. Extensive grazing has caused the flora and soil of this ecosystem to become unstable. How has biodiversity affected the sustainability of this ecosystem? A Biodiversity has put this ecosystem at risk of being less sustainable in the future. B Biodiversity has not changed this ecosystem's level of sustainability.
C Biodiversity has prevented this ecosystem from being sustainable.
D Biodiversity has helped this ecosystem remain sustainable.