earth hour

Earth hour is to save electricity such as switching off the lights at night.Earth hour is held at march 28.It is because people are seeing many natural disasters around the world so they hoped by doing this it can raise awareness and slow down the effects of climate change.Everyone would switch off their lights to save electricity.We can switch off the lights and television and use candles and eating dinner.Earth is facing natural disasters.there are natural disasters like a green house effect.