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Among the biotic components of the ecosystem, the producer system is ?

  • Sea
  • Rivers
  • Green Plants
  • Animals
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2. Who invented Polio Vaccine ?

  • Harrison and Sympson
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3. Placenta is the structure formed :

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  • by foetus only
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5. Study of fossils is called

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  • Pomology
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Read more from - Biology Questions Answers
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