Ecosystems and Biomes NEW the BIG idea Matter and energy together support life within an environment. 12.1 Ecosystems support life. 12.2 Matter cycles through ecosystems. 12.3 Energy flows through ecosystems. 12.4 Biomes contain many ecosystems. OUTLINE
12.1 Ecosystems support life. Ecosystems are made up of living things (biotic) and nonliving things (abiotic). Biotic ecology ecosystem biotic factor abiotic factor Abiotic plants animals temperature Sun soil water SECTION OUTLINE
12.2 Matter cycles through ecosystems. Water, carbon, and nitrogen are materials that are necessary for life. They move through ecosystems in continuous cycles. Water Cycle Carbon Cycle Nitrogen Cycle cycle water cycle carbon cycle nitrogen cycle click image to enlarge VISUALIZATION Watch the nitrogen cycle in action. SECTION OUTLINE
12.3 Energy flows through ecosystems. Producers are the basis of feeding relationships in ecosystems. producer cattails Producer caterpillar Primary Consumer consumer decomposer food chain food web energy pyramid frog Secondary Consumer heron Tertiary consumer Food chains and food webs help show how energy moves through living things. SECTION OUTLINE
12.4 Biomes contain many ecosystems. Ecosystems of land biomes are affected by climate are affected by conditions of the soil are characterized by types of plants biome coniferous deciduous estuary Land Biomes click image to enlarge SECTION OUTLINE
12.4 Biomes contain many ecosystems. Ecosystems of water biomes can be freshwater or saltwater are affected by landscape if freshwater are affected by depth if marine biome coniferous deciduous estuary Aquatic Biomes click image to enlarge SECTION OUTLINE
12.1 Ecosystems support life. I. Ecosystems support life. A. Living things depend on the environment. B. Biotic factors interact with an ecosystem. C. Many abiotic factors affect ecosystems. 1. Temperature 2. Light 3. Soil 4. Water ecology ecosystem biotic factor abiotic factor SUMMARY
12.2 Matter cycles through ecosystems. II. Matter cycles through ecosystems. A. All ecosystems need certain materials. B. Water cycles through ecosystems. C. Carbon cycles through ecosystems. D. Nitrogen cycles through ecosystems. cycle water cycle carbon cycle nitrogen cycle SUMMARY
12.3 Energy flows through ecosystems. III. Energy flows through ecosystems. A. Living things capture and release energy. 1. Producers 2. Consumers 3. Decomposers B. Models help explain feeding relationships. 1. Food Chain 2. Food Web C. Available energy decreases as it moves through an ecosystem. producer consumer decomposer food chain food web energy pyramid SUMMARY
12.4 Biomes contain many ecosystems. IV. Biomes contain many ecosystems. A. Regions of Earth are classified into biomes. 1. Taiga and Tundra 2. Desert and Grassland 3. Temperate Forest and Tropical Forest B. Water covers most of Earth s surface. 1. Freshwater Biomes 2. Marine Biomes biome coniferous deciduous estuary SUMMARY
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