Personally I would say it's A (apart from the installation costs which may make it a little expensive) but it does involve certain aspects of D also as wind energy doesn't cause pollution. So either A or D!
Hope I was of help! :)
What are you asking by this?
Answer:
B
Explanation:
The printing press allowed mass production of books that spread new scientific ideas.
Answer:
From clustered settlements.
Explanation:
Each person living in a clustered rural settlement is allocated strips of land in the surrounding fields. In other places the land is owned collectively by the settlement or by a lord, and farmers do not control the choice of crops or use of the output.
Answer:
B is you answer
Explanation:
The air that rises at the equator does not flow directly to the poles. Due to the rotation of the earth, there is a build up of air at about 30° north latitude. ...