Join the movement for clean planet! World Cleanup Day unites millions of volunteers, governments and organisations in 191 countries  to tackle the global waste problem and build up the new and sustainable world.Ymunwch â'r mudiad ar gyfer planed lân! Mae Diwrnod Glanhau'r Byd yn uno miliynau o wirfoddolwyr, llywodraethau a sefydliadau mewn 191 o wledydd i fynd […]
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