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  • 2005-04-14T13:30:00Z on ABC
  • 5m
  • Colin Grubb
  • Australia
  • English
Leaves are so important to a plant's life as well as ours. Leaves soak up CO2 and produce the clean oxygen we breathe; they are the only living things that can make their own food - but why do some plants drop them in autumn?
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