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1. If there are lots of Mayfly Larvae in an area, what does this indicate?

  • Clean air with a high concentration of Oxygen
  • Polluted air with a high concentration of Sulphur Dioxide
  • Clean water as of the high concentrations of dissolved Oxygen
  • Polluted water with a high concentration of Sulphur Dioxide
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2. Define Distribution Of An Organism

  • Where an organism lives
  • How many organisms there are
  • The population of an organism
  • An increase in non living factors

3. Why do Cacti have spines instead of leaves?

  • Because the spines store fat for the Cacti
  • Because plants lose water vapour from the surface of their leaves and Cacti need to reduce water loss
  • Because the spines lose water vapour and maximise heat loss
  • Because they need to attract predators

4. Which non living indicator of environmental change can be used to detect changes in the temperature of sea surfaces?

  • Dissolved Oxygen Meters
  • Mayfly Larvae
  • Satellites
  • Rain Gauges

5. What are the 3 affects of Environmental Change?

  • Population increases/ decreases and amounts of other species
  • Changes in number of predators, prey and food
  • Population increases/ decreases and changes in the distribution of an organism
  • Changes in the distribution of an organism, mates, amount of food available


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