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STUDY AT BIOLÂNDIA: https://www.biolandia.com.br/ ♦ ALL classes, handouts, commented exercises and much more! Hey guys! Everything's fine! Here's a super complete class on ecological pyramids! A very important subject in ecology! Come and learn quality biology here! Follow me: YOUTUBE: / biologiacoms. . FACEBOOK: / biologiacoms. . INSTAGRAM: / samuelkcunha TWITTER: / samuelkcunha