The wildlife and plant life in New Mexico is extremely diverse. The size, terrain and climate make it one of the more biologically diverse states in the nation. It is home to more than 4,500 different species of plants and animals. Several life zones converge in southwestern New Mexico, making this area one of the more biologically diverse of the southwestern states. The life zones in the state include the alpine tundra, coniferous forests, woodlands, grasslands, desert shrublands, and riparian areas.