Answers:

1. Yes, they do. They think that the earth will keep warming if we don’t find a solution.

2. There are two causes of global warming. The first one is fossil fuels (oil, coal...) and deforestation.

3. The Global warming refers to the increase of the Earth's average surface temperature and the Climate change is a broader term that refers to long-term changes in climate.

4. Sea level may rise and the people will move to find new homes. Some animals and plants became extinct.

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