What is ozone?
thick slab of ice attached to the coastline but floats on the ocean
What is ice shelf?
this prevents Antarctica from being used for weapons testing and military actions
What is the Antarctica Treaty?
there is very little of this during June, July, and August at the South Pole
What is sunlight?
only these live in the region year-round
What are emperor penguins?
this has changed shape and size since 1980
What is the ozone hole?
Antarctica appears to double in this every winter
What is size?
this legislation protects the region's wildlife
What is the Antarctic Conservation Act?
an estimated 80% of this is reflection back into the upper atmosphere
What is solar radiation?
this is one largest animals to visit Antarctica part-time
What are whales?
strong, fast winds that blow cold air from high interior lands towards the coasts
What are katabatic winds?
these create hazards for boat transportation
What are icebergs?
land that could hold this is buried by the ice sheet
What is mineral resources?
this acts as a giant reflection, maintaining global climate balance
What is ice?
in recent years, new species of these have been discovered in the seas around the continent
What are marine animals?
scientists estimate that 2/3 of this is in the ice sheet
What is freshwater?
process of ice breaking free from an ice shelf or glacier
What is calving?
Weddell, Scotia, Amundsen, Ross, and Davis are examples of these
What are seas?
this is the best time of year for scientists to live in Antarctica
What is summer?
albatross, cormorants, and gulls are examples of these visitors
What are seabirds?
Richard Byrd was the first to do this in 1929
What is fly over Antarctica?
these are made from freshwater, not saltwater
What are icebergs?
Antarctica "ownership" is divided into these shapes?
What are pie slices?
this is spread out over wide surface area when compared to lower-latitude places like the Equator
What is the sun's energy?
sighting one of the biggest attractions for tourists
What are whales?