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更新日:平成24年5月25日

  • Low Carbon Society
  • Recycling Society
  • Symbiotic Society
  • 日本語 Japanese

Recycling sociology Quiz

Question3

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The ______ % of raw garbage are untouched foods or leftovers and the remaining are cooking scrap. How many % do you think it is?


1 2 3
20 40 60
answer3 answer3 answer3