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, arctic animals are assisted in survival by what?

pick from the following. 1. genetic diversity. 2. anti-freeze. 3. food and shelter. 4. warm greetings. 5. some invertebrates. 6. lowered energy cost. 7. fat tuesday celebrations. 8. layers of fat.
A:
8.