If you're interested in the planet, come play our WWF Earth Hour quiz now. Thank you to everyone who played our quiz during Earth Hour 2012. We raised £128 for the WWF.
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You must complete a quiz before you can challenge your friends. If you don't want to complete this quiz you can still let your friends know about it using the social sharing links above. You can 'like' this quiz on Facebook, tweet about it, and much more.