Every year the world goes dark for one hour, the Earth Hour. The event is organised by the ___INTERNATIONAL___ World Wildlife Fund. At tourist destinations, in offices and private homes, lights are switched off for one hour at ___EXACTLY___ 8:00 pm. The idea is to show that our planet is in danger and it needs care and ___PROTECTION___. It’s ___IMPOSSIBLE___ to remain indifferent to changes in the climate which go on and on. The Earth Hour is not about saving an hour’s electricity. It’s about realising that we live on a ___WONDERFUL___ planet and need to look after it – not just for an hour a year but every day. The Earth Hour is a part of an ___ECOLOGICAL___ education whose aim is to make people understand their responsibility to the planet.