The report, from the UN's Intergovernmental Panel on Climate Change (IPCC), finds that many life-forms are moving north or into deeper waters to survive as their habitats shift.

They're also being forced to change their behaviors. For instance, many birds are nesting, breeding, and migrating earlier as spring arrives sooner than before. (Related: "Ten U.S. Species Feeling Global Warming's Heat.")

"Evidence of climate change impacts is strongest and most comprehensive for natural systems," the report said. (See: "New Climate Change Report Warns of Dire Consequences.")

Current research suggests that winners in this transformation will be adaptable species that are expanding their ranges, including many weeds and pests, and also cold-sensitive, invasive species like the Burmese python in Florida, said