Research Trophic Levels to Construct a Forest Ecosystem Food Pyramid July 13, 2017January 6, 2022 ~ eltoncpacheco Research: Trophic Levels Identify: Biotic & Abiotic Factors of an Ecosystem Find more information about this activity here. Share this:TwitterFacebookLike this:Like Loading... Related Published by eltoncpacheco View all posts by eltoncpacheco