Final answer:
White adipose tissue stores lipids and insulates, while brown adipose tissue is found mainly in infants, metabolizes fats and generates heat instead of ATP.
Step-by-step explanation:
The difference between brown and white adipose tissue lies in their location, function, and role in weight regulation. White adipose tissue, prevalent and appearing yellow due to carotene, primarily stores lipids and insulates the body, found around kidneys and the eye back. Brown adipose tissue, more common in infants and located mainly in the neck and clavicular areas in adults, is rich in mitochondria and metabolizes fat to release heat through a protein called thermogenin, rather than producing ATP.