B. It's less dense. Ice floats<span> because it is about 9% less dense than liquid water.</span>
Endotherms, such as birds and mammals, use metabolic heat to maintain a stable internal temperature, often one different from the environment. Ectotherms, like lizards and snakes, do not use metabolic heat to maintain their body temperature but take on the temperature of the environment.
Answer: The answer is C
Explanation: I took the test :))
