CrashCourse's video: How We ALL Get Our Energy Plants Ecosystems : Crash Course Botany 13

From the driest deserts to the lushest forests, ecosystems are networks of life where organisms and the environment interact. In this episode of Crash Course Botany, we’ll explore how plants function as the foundations of these systems, without which no other life on Earth would be possible. Chapters: The Foundations of Ecosystems 00:00 Autotrophs 1:43 Heterotrophs 3:15 Food Webs 4:56 Protecting Wild Tomatoes 8:08 Keystone Species 10:01 Review & Credits 11:55 Sources: https://docs.google.com/document/d/1PB6WdUJcABAccO-U-t6ic7WbfP2z0Pr5P9a8HMr6zh4/edit?usp=sharing Check out PBS Terra's Untold Earth here: https://www.youtube.com/watch?v=VVeBSKK88Ig& *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: David Fanska, Andrew Woods, Tawny Whaley, Sean Saunders, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Aziz Y, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Starstuff42, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pinapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Instagram - https://www.instagram.com/thecrashcourse/ Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse CC Kids: http://www.youtube.com/crashcoursekids