~In the first chart the grass gives energy to the Gerbils, Cottontail, & Coyotes. the Cottontail give energy to the Hawk & the Coyote. The Gerbil give energy to the Hawk & the Coyote. If grass never grew in the desert, the population of organisms will be low. ~Native plants have been displaced resulting in radically different habitats and food for wildlife. Species like red brome and buffelgrass have become dense enough in many areas to carry fire in the late spring and early summer.