How wind turbines produce power. 1. Intro- need for non-polluting renewable/sustainable source of electric power – why?

Topic:
Renewable Energy
How wind turbines produce power.
1. Intro- need for non-polluting renewable/sustainable source of electric power – why?
-thesis, wind turbines are an excellent source because of (A,B,C)
2. How it produces power
3. Advantages (A,B,C)
4. Problems
5. Conclusion