Today we continue our exploration of the Water Cycle by drinking some dinosaur pee. Yep! Well, it's a little less gross that it sounds. It turns out that all of the water on Earth is just constantly recycled in what we call a closed system. No water comes in and no water goes out. So that means that, at some point, it's possible the water we're drinking was once dinosaur pee... or tears... Watch More Crash Course Kids: www.youtube.com/user/crashcoursekids ///Standards Used in This Video/// 5-ESS2-1. Develop a model using an example to describe ways the geosphere, biosphere, hydrosphere, and/or atmosphere interact. [Clarification Statement: Examples could include the influence of the ocean on ecosystems, landform shape, and climate; the influence of the atmosphere on landforms and ecosystems through weather and climate; and the influence of mountain ranges on winds and clouds in the atmosphere. The geosphere, hydrosphere, atmosphere, and biosphere are each a system.] [Assessment Boundary: Assessment is limited to the interactions of two systems at a time.] Want to find Crash Course elsewhere on the internet? Crash Course Main Channel: www.youtube.com/crashcourse Facebook - www.facebook.com/YouTubeCrashCourse Twitter - www.twitter.com/thecrashcourse Tumblr - thecrashcourse.tumblr.com Credits... Producer & Editor: Nicholas Jenkins Cinematographer & Director: Michael Aranda Host: Sabrina Cruz Script Supervisor: Mickie Halpern Writer: Alyson Shaw Executive Producers: John & Hank Green Consultant: Shelby Alinsky Script Editor: Blake de Pastino Thought Cafe Team: Stephanie Bailis Cody Brown Suzanna Brusikiewicz Jonathan Corbiere Nick Counter Kelsey Heinrichs Jack Kenedy Corey MacDonald Tyler Sammy Nikkie Stinchcombe James Tuer Adam Winnik