Unit 8: EcologyAP BiologyUnit 8: EcologyOrganismal ecology: responses to the environmentEnergy flow through ecosystemsPopulation ecology••Community ecologyEcosystem disruption and conservationVocabularyUnit 8 topicsUnit 8 overview8.1Responses to the Environment8.2Energy Flow Through Ecosystems8.3Population Ecology8.4Effect of Density of Populations8.5Community Ecology and Biodiversity← Previous7.8 Continuing EvolutionNext →8.1 Responses to the EnvironmentPractice AP Biology questions →