Understanding the physiological adaptations of small desert mammals is featured.

Behaviors of physiological adaptations that allow a small desert mammal to survive severe drought conditions include all of the following except:

The absence of sweat glands

Inactivity during the day

The production of nearly dry feces

The use of water derived from the metabolism of food

The excretion of ammonia in substantial amounts

Ideas are then formulated to explain.

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...ation of a material from a region of higher concentration to a region of lower concentration is called diffusion). The kidneys are a specialized organ that allows diffusive properties to keep water in the body and excrete wastes (ammonia). However, ammonia is not easily excreted by the kidneys.
<br><br>Desert animals have extremely long proximal tubules in their kidneys where water is reabsorbed. This allows them to maximize reabsorption of water. An animal that excreted ammonia would pull large amounts of water out in the urine not to mention that ammonia is toxic to mammals. It is necessary for both people and animals to excrete ammonia [NH3], a byproduct of metabolism. However, ...