B4

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  • Created by: Wymer-7
  • Created on: 28-04-14 18:36
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  • B4
    • Ecology in the Local Environment
      • An ecosystem includes all living things and their surroundings
        • An organisms home is its habitat
      • A community is made up of the organisms living there
        • A population is the particular amount of organisms in a community
        • An ecosystem includes all living things and their surroundings
          • An organisms home is its habitat
      • Native ecosystems have wider biodiversity than artificial ecosystems
      • Capture-recapture data can be used to calculate a population size estimate
        • This assumes: no deaths occur, identical sampling methods, survival rates not affected
    • Photosynthesis
      • Photosynthesis is a two part process
        • Light energy splits oxygen gas and hydrogen ions
        • Carbon dioxide gas combines with the hydrogen to make glucose and water
      • Carbon dioxide light and temperature are limiting factors
      • The symbol equation is 6CO2+6H2O---C6H12O6+602
      • Leaves are adapted for efficient photosynthesis- large surface area, thin and have guard cells
    • Diffusion and Osmosis
      • Diffusion is the movement of gas from high concentration to low concentration
      • The rate is increased by shorter distance a greater concentration gradient
      • Osmosis is the tansfer of water from a high concentration to a low
      • Transpiration is the evaporation and diffusion of water from leaves
    • Minerals and Farming
      • Organic farming uses manure, crop rotation weeding and different planting times
      • Untitled
  • Minerals are absorbed by active transport
    • Minerals and Farming
      • Organic farming uses manure, crop rotation weeding and different planting times
      • Untitled

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