1. Ecosystem All of the living (biotic) and non- living (abiotic) things in an area What is abiotic in this ecosystem? Biotic?

2. Species A group of organisms that are able to reproduce and create fertile offspring. Ex: all the horses in the world

3. Population A group of individuals of the same species in one area Ex: all of the dogs in Lindsay

4. Immigration To enter and settle in an area to which an organism is not native

5. Emigration To leave an area and settle in another area

6. Food web Diagram of several interconnected food chains

7. Energy Pyramid  Image of the trophic (feeding) levels in an ecosystem

8. Producers/Autotrophs Auto = self Troph = feed Make sugar from the sun's energy through photosynthesis (some exceptions to this) Example: plants, trees, grass

9. Consumers/Heterotrophs Hetero = different, other Troph = feed Cannot make their own food, must obtain nutrients from eating consumers or producers 3 types: - Herbivore - Carnivore - Omnivore

10. Decomposers Break down dead organisms to release nutrients into environment Ex: bacteria and fungi