Q:Fact 1: Staying warm has a positive impact on an animal 's survival. Fact 2: Arctic animals have layers of fat and thick coats of fur to keep warm in the frigid Arctic climate. Given the two facts above, answer the question "Arctic animals are assisted in survival by what?" with the following options: - genetic diversity - anti-freeze - food and shelter - warm greetings - some invertebrates - lowered energy cost - fat tuesday celebrations - layers of fat
A:
layers of fat