1. Can bananas make people feel happy?
2. Will an ice cube melt faster in a cup of water or a cup of pop?
3. What kind of shape makes kites fly faster/higher?
4. Do oranges gain or lose vitamin C after being picked?
5. How long do home haircoloring products hold their colour? What are the factors that can affect the time the products hold their colour?
6.Where are the most germs in your school?
7. Does mouthwash really kill oral bacteria?
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