Worms cause major changes to ecosystems, but those changes aren’t always new.
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If you want to learn more about this topic, start your googling with these keywords:
Invasive species: A non-native species that causes harm to the ecosystem.
Biome: A large, naturally occurring community of flora and fauna.
Duff layer: The moderately to highly decomposed organic material between the leaf litter and the soil.
Seedling: A young plant less than one meter high.
Sapling: A young tree that’s bigger than a seedling.
Graminoids: Herbaceous plants and grasses.
Coevolution: The process that occurs when two closely associated species influence each other’s evolutionary paths.
Savanna: A grassy plain with scattered tree coverage.
Credits (and Twitter handles):
Script Writer: David Goldenberg (@dgoldenberg)
Script Editor: Alex Reich
Video Illustrator: Qingyang
Video Director: Emily Elert (@eelert)
Video Narrator: Emily Elert (@eelert)
With Contributions From: Henry Reich, Kate Yoshida, Ever Salazar, Peter Reich
Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder
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