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Things to Know for Ecology Unit 2 Test (A-Day) Cycles: Water, Nitrogen, Carbon-Oxygen Water Cycle Evaporation, Condensation, Precipitation, Run-Off, Seepage, Transpiration Role of plants and animals in cycle Carbon-Oxygen Cycle Symbols CO2 and O2 Photosynthesis/ Respiration Role of plants and animals in cycle Fossil Fuels, Global Warming, Acid Rain, Smog, Volcanic Activity, Car Exhaust, Factory Pollution Nitrogen Cycle Nitrification, Denitrification, Nitrogen Fixation, Role of bacteria in cycle, Role of animal waste in cycle, Role of decaying animals/ plants, NO2, NH3, Abiotic/ Biotic Factors Definition, Examples Autotrophs- Definition Types: chemosynthesis photosynthesis Heterotrophs- Definition Types- herbivores, carnivores, omnivores, decomposers, scavengers (what do they eat) Food Chains / Food Webs know how to read each. understand how populations are affected if organisms are removed Ecological Relationships (Definitions, Competition, Symbiosis, Predator/Prey Competition- Oxygen, Sunlight, Space, Water etc. Symbiosis- Definition, Types: Mutualism, Parasitism, Commensalism Levels of Organization Biosphere, Biome, Ecosystem, Community, Population, Organism Terms to know: Exotic Species (Non-Native), Niche, Ecological Succession, Biomass, Fossil Fuel, Acid Rain, Eco-Invasion, Toxin, Decomposition, Self-Sustaining