3/15/12

Deserts by Mike and Nick


The scorching sun and bone-dry environment makes survival a daunting task. Few organisms are fit for life in the driest biome on earth, the desert. With an average yearly rainfall less than 25 centimeters, all organisms require adaptations to survive in the dry climate. Cactuses, Jack rabbits, Kangaroo, and Camels are among the few organisms that nature selected for life in the harsh desert environment. 

Cactuses have adaptations that allow them to collect a surplus of water in the rare event of a rainstorm. The stem of cactuses are 90 percent water (Fridell, p90). This allows the cactus to survive periods of drought which can last over a year. Prickly spines, instead of leaves, is a successful trait that helps the cactus survive.

No comments:

Post a Comment