Circuitul apei in natura

game:
https://www.educationsoutheastwater.com.au/resources/natural-water-cycle-game

https://pmm.nasa.gov/education/videos/earths-water-cycle

prezentare interactiva

https://www3.epa.gov/safewater/kids/flash/flash_watercycle.html

ppt-

http://www.danubebox.org/files/dbox/download/Circuitul_apei.pdf