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Text File  |  1999-02-05  |  501b  |  14 lines
  1.  
  2.     Third killer flatworm is unearthed in back garden
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  4. 1.    To which taxonomic group do earthworms belong? To which taxonomic group do flatworms belong?
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  6. 2.    Draw up a table to compare the characteristics of these two groups.
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  8. 3.    Explain how earthworms improve the humus content, aeration and drainage of soil.
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  10. 4.    What might be the long-term effects of the loss or depletion of earthworm populations?
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  12. 5.    How have the "killer" flatworms arrived in this country?  How can they be controlled?
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