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developed country - n. a country that has fewer poor people because it has industry and can raise money
developing country - n. a country that has more poor people because it lacks industry and people are unable to buy the things they need
greenhouse (gas) - adj. relating to the warming of the Earth's atmosphere that is caused by air pollution
emissions - n. produced or released (such as energy or gas) from a source
crystal clear - (idiomatic expression). without a doubt; very certain
