LESSON 41
• http://www.euwfd.com/html/hydrological_cycle.html 
• http://www2.wausau.k12.wi.us/franklin/science-today/water-cycle/ 
• http://www.blueplanet.nsw.edu.au/year-7-and-8-natural-and-urban-water- 
cycles/.aspx

Lesson 41