How is a crepuscular schedule an adaptation of desert animals to heat and lack of water in their environment?

Answer:

A crepuscular schedule means that the animal is most active during the coolest parts of the day, dawn and dusk. By minimizing direct contact with the noon desert sun and the heat of the day, the animals conserve their water supplies allowing them to thrive on less. Without such a schedule, the animal would likely require larger supplies of water to deal with body temperature regulation and to replace the water lost to dehydration.