800,000-year Ice-Core Records of Atmospheric Carbon Dioxide (CO2) This page introduces Antarctic ice-core records of carbon dioxide (CO2<span>) that now extend back </span>800,000 years<span> at Dome C and over</span>400,000 years<span> at the Vostok site.</span>
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Answer: United States
Hope this helps :$
These countries are found all over the world.
Russia is in Asia.
Canada is in North America.
China is in Asia.
US is in North America.
Brazil is in South America.
Australia is in Oceania.
India is in Asia.
Argentina is in South America.
Kazakhstan is in Asia.
Sudan is in Africa.
South Africa is in Africa.
Japan is in Asia.
Germany is in Europe.
UK is in Europe.
Jamaica is in North America (or the Caribbean)
Twilight zone because the twilight zone is the deepest part of the ocean
