Why do maple seeds spin?

Related questions

1. Why do maple trees have helicopters?
2. How long do maple seeds fall?
3. Can you cut the top off a tree?
4. Is there a free version of Maple?
5. Can a Japanese maple grow inside?
6. Do all maple trees have helicopters?
7. Do silver maple trees have helicopters?
8. Do Japanese maples like coffee grounds?
9. Is maple flooring expensive?
10. Where is the best place to plant a Japanese maple tree?

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21. #nature
22. #turns