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http://www.epa.gov/safewater/kids/flash/flash_watercycle.html http://www.epa.gov/safewater/kids/grades_k-3_watercycleatwork.html http://www.fossweb.com/modules3-6/Water/activities/evaporation.html http://www.mbgnet.net/ http://www-k12.atmos.washington.edu/k12/pilot/water_cycle/index.html Make sure to explain the ocean may get saltier over time due to droughts and lack of rain. If water doesn't go in, but comes out, the impurities (salt) get left behind...more salt, less water=saltier water.
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