The sound of rain is one of the most relaxing sounds in existence. This sound alone eases away stress and makes everything outside look more calm and quiet . Animal and human cells are made up of 90 percent water, so without fresh water, most life could not exist. You can see the importance of rain to life on land if you look at environments like the Sahara Desert, which receives less than three inches of precipitation a year, compared to 33.3 inches in an average year in Chicago. Thanks to the scarcity of rain and snow in the Sahara, it has only sparse plant and animal life.   Source:http://sciencing.com/rains-importance-life-earth-23021.html

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