What are some of the major problems in the world
- What are the major problems in the world
- What are the major problems in the world today
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- What are 10 major problems in the world
- What are some major problems in the world today
- What are some major problems in the world right now
- What are the major problems in the world right now
- What are some major problems around the world
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- What are the major problems the world is dealing with today
- What are 5 major problems in the world
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