Complex sentence: The Coachella Valley Mountains Conservancy (CVMC) is a 21-member governing board started in 1987, designed to preserve natural and cultural resources in the areas that surround the Coachella Valley's San Jacinto, and Santa Rosa mountains in southern California.
Split into simpler sentences: The Coachella Valley Mountains Conservancy (CVMC) is governed by a 21 member board started in 1987. It was designed to preserve natural and cultural resources in the areas that surround the Coachella Valley's San Jacinto, and Santa Rosa mountains in southern California.