Ashenfelter Marine Ecology

2. large mass of ice formed on land from compacted layers of snow
7. one population of ____ penguins has declined 90% in the past 50 years
8. this is the ice that forms on the surface of the ocean, and melts somewhat (and more and more) during the summer
9. is a region on earth with no native human inhabitants
11. polar bears have large ___ to spread their weight out on the ice
12. sea ice reforms in the arctic during the winter but it is not _____-year so it is thinner and less diverse habitat
13. due to these what happens in the arctic doesn't stay in the arctic, these are global.
15. the seals polar bears really like to eat
18. this ice, found on land, is melting into the oceans and causing seal level rise
20. polar bears have a very keen sense of _____.
21. penguins exhibit this type of coloration that we have learned about before in ocean animals

1. are aquatic birds that live in only the southern hemisphere
3. mass of glacier ice greater than 50,000 km2 is an ice ____
4. this continent surrounded by ocean is not owned by any one country but is shared and studied by scientists from all over the world
5. thermal ______ or the way that water takes up more space when it is warmer is another main cause of sea levels rising with climate change
6. these arctic animals have fewer places to haul out and rest with less sea ice, leading to crowding on islands
7. this region is an ocean surrounded by land
10. this is a land continent with huge mountains covered in glaciers
14. polar bears are evolved for walking on ice, but also for ________ in the ocean to hunt.
16. the skin of a polar bear is this color, thought to help them absorb heat energy
17. this is a term for how much solar energy is reflected from the earths's surface
19. melting of this ice does not cause sea levels to rise because it is already in the water
22. thick, floating platform of ice formed where a Glacier flows onto the ocean surface is an ice ____

Ashenfelter Marine Ecology - Polar Seas