http://en.wikipedia.org/wiki/Wind
http://www.thefreedictionary.com/wind
http://www.leslietryon.com/science/windfacts.html
http://voices.yahoo.com/fun-facts-kids-wind-5719418.html
http://www.ehow.com/facts_4894805_facts-wind-energy.html
http://www.canwea.ca/wind-energy/windfacts_e.php
http://interestingenergyfacts.blogspot.ca/2008/03/wind-energy-facts.html
http://en.wikipedia.org/wiki/Cloud
http://www.weatherwizkids.com/weather-clouds.htm
http://www.wxdude.com/page9.html
http://42explore.com/clouds.htm
http://www.ehow.com/how-does_5393253_clouds-made.html
http://wiki.answers.com/Q/What_are_clouds_made_of
http://answers.yahoo.com/question/index?qid=20071211093526AAGxSd8
http://uk.answers.yahoo.com/question/index?qid=20060720021028AAhjWor
http://en.wikipedia.org/wiki/Precipitation_(meteorology)
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/prcp/home.rxml
http://www.britannica.com/EBchecked/topic/474379/precipitation
http://environmentalet.org/env245/precipitation.htm
http://wiki.answers.com/Q/What_is_precipitation
http://www.thefreedictionary.com/wind
http://www.leslietryon.com/science/windfacts.html
http://voices.yahoo.com/fun-facts-kids-wind-5719418.html
http://www.ehow.com/facts_4894805_facts-wind-energy.html
http://www.canwea.ca/wind-energy/windfacts_e.php
http://interestingenergyfacts.blogspot.ca/2008/03/wind-energy-facts.html
http://en.wikipedia.org/wiki/Cloud
http://www.weatherwizkids.com/weather-clouds.htm
http://www.wxdude.com/page9.html
http://42explore.com/clouds.htm
http://www.ehow.com/how-does_5393253_clouds-made.html
http://wiki.answers.com/Q/What_are_clouds_made_of
http://answers.yahoo.com/question/index?qid=20071211093526AAGxSd8
http://uk.answers.yahoo.com/question/index?qid=20060720021028AAhjWor
http://en.wikipedia.org/wiki/Precipitation_(meteorology)
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/prcp/home.rxml
http://www.britannica.com/EBchecked/topic/474379/precipitation
http://environmentalet.org/env245/precipitation.htm
http://wiki.answers.com/Q/What_is_precipitation