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Chapter 2: Living Things in Ecosystems Notes Name A. Section 2.1 (Everything is Connected) Goals 1. 2. 3. Everything is Interconnected environment is clear when Example: What is an ecosystem? biotic factors: abiotic factors: Organisms & Species organism: species: scientific name: Population: Community includes Niche vs. Habitat niche: includes includes describes habitat: B. Section 2.2 (How Species Interact w/ Each Other) Goals 1. 1. Predation: prey: predator: predators 2. Competition: 3. Parasitism: parasite: host: difference between parasitism & predation: hosts are 4. Mutualism: 5. Commensalism: C. Section 2.3 (Adapting to the Environment) Goals 1. 2. 3. 4. Adapting to the Environment Evolution by Natural Selection evolution: Charles Darwin proposed observed differences in natural selection: a. must be b. c. adaptations: adaptations Coevolution: predator-prey relationships plants & herbivores Extinction: