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..."
Just as the leaves of trees turn up before a rain shower, vegetable plants also flip over their leaves as a sign of a water problem. However, you have to do a little observation to
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http://www.chacha.com/question/why-does-tree-leave...
The bottom of the leaves are more porous so they absorb water faster. The top surface is harder to absorb sunlight and shed dirt.
http://answers.yahoo.com/question/index?qid=200804...
People do this simple to make the salt or any other ingredients such as pepper and others spread around on the chips. They want it to spread so that it doesn't stay in one place.
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