01-30-2012, 07:49 PM
This is a question that really cannot be answered but i guess why it exists is because of nature think about it in the perspective of animals being hot and cold blooded. I guess if everything was just hot or in the middle the animals who live in extreme conditions eg polar bears etc would not be able to live due to the climate being too hot. However this is my opinion on the subject however others may be diffrent
Eligible.