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HSC Biology

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Lesson 6 of 29
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Effects of the Environment on Organisms

How do environmental pressures promote a change in species diversity and abundance?

Inquiry Question


  • Predict the effects of selection pressures on organisms in ecosystems, including:
    • Biotic factors
    • Abiotic factors
  • Investigate changes in a population of organisms due to selection pressures over time, for example:
    • Cane toads in Australia
    • Prickly pear distribution in Australia