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Course: Biology archive > Unit 26. Lesson 1: Intro to ecology. Ecology introduction. What is ecology? Ecological levels: from individuals to ecosystems.
What is an ecosystem? (article) | Ecology | Khan Academy
Ecosystems and biomes. What is an ecosystem? Flow of energy and matter through ecosystems. Food chains & food webs. Energy flow & primary productivity.
Unit 8: Ecology - Khan Academy
Welcome to the fascinating subject of ecology! From population dynamics to biodiversity, this unit explores the complex web of interactions that make up our natural world.
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Food chains & food webs (article) | Ecology | Khan Academy
Course: High school biology (DEPRECATED) > Unit 9. Lesson 5: Trophic levels. Flow of energy and matter through ecosystems. Food chains & food webs. Example identifying roles in a food web. Energy flow and primary productivity. Trophic levels review.
Phylogenetic trees | Evolutionary tree (article) | Khan Academy
Lesson 7: Phylogeny. Taxonomy and the tree of life. Discovering the tree of life. Understanding and building phylogenetic trees. Phylogenetic trees.
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Review of ecological relationships, including mutualism, predation, competition, and more.
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Course: Middle school biology > Unit 6. Lesson 1: Ecosystem dynamics. Ecosystem dynamics: Clark’s nutcrackers and the white bark pine.
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Course: High school biology > Unit 1. Lesson 6: Interactions in communities. Interactions between populations. Predator-prey population cycles. Interactions in communities. Interactions within and among species. Competition and regulation. Understand: interactions in communities. Apply: interactions in communities.
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