All camels are basically similar in structure. They have developed adaptations for coping with both heat and dehydration. Which of the following does not benefit the camel as a means of preventing dehydration?

a. Camels can extract water from their solid wastes.
b. Camels' ears are lined with fur to keep out sand and other blowing matter.
c. Their kidneys are capable of concentrating urine to reduce water loss
d. Camels are able to locate water in any environment.