fuel - Global warming happens because we burn fossil _________which produce greehouse gas, glaciers - Mounain __________and ice caps are melting fast, vanish - Parts of the world in low-lying areas may _________completely in 100 years because of rising sea level, threat - Polar bears are under _________to become extinct nowadays, extinct - There aren't any wild wolves in Britain anymore. They became ________250 years ago, traps - Carbon dioxide is dangerous because it ___________heat in the Earth's atmosphere, heat - Global warming is causing the Earth to __________up, surround - Dangerous gases like carbon dioxide ___________the Planet, patterns - Changing weather __________threaten a lot of animals with extinction, increasing - The number of animals dying because of bad climate conditions is gradully __________, reduce - To help the environment people should ____________the everyday use of cars, starve - People in developing countries ____________because they don't have enough food, unpredictable - The weather has become very _________, drowned - He fell into the river and ___________,

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