Why Do Leaves Turn Upside down before It Rains?

Answer

Before a rainstorm the leaves of some trees such as maples will turn upside down. The reason for this is that they are reacting to the change in the humidity.
Q&A Related to "Why Do Leaves Turn Upside down before It Rains..."
Peppers are sensitive summertime plants and grow only during the frost-free season. Peppers grow best at 70 to 80 degrees Fahrenheit and fail in frost and temperatures under 55 degrees
http://www.ehow.com/info_8738676_do-leaves-turn-up...
http://www.chacha.com/question/why-does-tree-leave...
A change in humidity could cause the stomata on the leaves to close, resulting in a slight change.
http://www.kgbanswers.com/why-do-leaves-turn-over-...
There's one rather science-minded guy who has already pointed out the relationship to the wind. But don't forget the more subtle aspects of Mother Nature's way. Why are leaves shaped
http://answers.yahoo.com/question/index?qid=200608...
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