Types and examples of mutualistic interactions.
"River Meditation" by Jason Shaw, https://freemusicarchive.org/music/Jason_Shaw/Audionautix_Acoustic/RIVER_MEDITATION___________2-58, CC BY 3.0.
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By Lelly Marliana. This video and the files associated with it are licensed under a Creative Commons Attribution 4.0 International license. You are free to distribute, remix, adapt, and build upon them in any medium or format, even for commercial purposes, provided you give appropriate credit to Lelly Marliana.