Answer the mixed questions about Earth Hour to prove your understanding of the topic.
Earth Hour is a worldwide movement organized by the World Wide Fund for Nature (WWF). The event is held annually, encouraging individuals, communities, and businesses to turn off non-essential electric lights, for one hour, from 8:30 to 9:30 p.m. on a specific day towards the end of March, as a symbol of commitment to the planet.
Lectures (e.g. TED talks)
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