The high body temperatures of bactrian camels allow them to preserve water.The hairy, white bristles of the old man cactus help deflect strong desert sunlight.
In deserts, there is very little vegetation. Depending on the type of desert, the climate may be very dry, or very hot. Desert ecology is about studying ecology in desert-like climates. Many of the organisms that live there have adapted, to be able to cope with these conditions.
