Ecosystems

What is ecosystem, biome, biotic, abiotic and energy flows.

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  • Ecosystems
    • Definition
      • This is a set of relationships between all the organisms and non-living factors in a particular area.
    • Biotic
      • These are the organisms that live there
        • E.g. producers, herbivores, carnivores etc.
    • Abiotic
      • These are the non-living factors in the area.
        • E.g. atmosphere, water, soil etc.
    • Biome
      • This is an area with a distinctive climate and vegetation
        • E.g. a tropical rainforest or arctic tundra.
      • They can contain different ecosystems
        • E.g. within a tropical grassland biome there could be areas of open woodland, areas of swamp, lakes and grassland plains.
    • Energy Flows
      • Energy moves between the organisms in an ecosystem
      • Energy enters an ecosystem by photosynthesis
        • The energy is stored in the plant and passed up the food chain when the plant is eaten
          • This process continues throughout the ecosystem - when one organism eats another it receives the energy from that organism
            • This means that energy flows between all the organisms in an ecosystem
  • This means that energy flows between all the organisms in an ecosystem

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