1990, 7 EU Member States; 1991 to 1994, 12 EU Member States; 1995-96, 14 EU Member States; 1997 to 2003, 15 EU Member States; 2004, 21 EU Member States; 2005-06, 25 EU Member States; 2007 to 2010, 27 EU Member States
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Each year on World Environment Day, schools and environmental organisations worldwide organise clean up operations. Join one! In addition to enriching the landscape of your neighbourhood, you will learn more about the animals and plants that live nearby.
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