1 what is "wwf"? -WWF (World Wide Fund for Nature) is one of the largest independent environmental protection organizations in the world. Since its establishment in 1961, WWF has been committed to environmental protection, with nearly 5.2 million supporters around the world and an active network in more than 1 countries. WWF's mission is to stop the deterioration of the earth's natural environment and create a bright future in which human beings live in harmony with nature. Committed to: protecting the world's biodiversity; Ensure the sustainable utilization of renewable natural resources; Promote actions to reduce pollution and wasteful consumption.

2 what is the specific content of its initiative "Earth Hour"? Earth Hour is an initiative put forward by WWF (World Wide Fund for Nature) to deal with global climate change. It is hoped that individuals, communities, enterprises and governments will turn off their lights for one hour at a specific time to show their support for climate change action.

3 which cities in China will respond this year? -Baoding is the first city in mainland China to officially announce its participation. There are also: Beijing, Shanghai and Hong Kong; Recently, Dalian, Chengdu, Wuhan, Shenzhen, Foshan Shunde and other places have also set off a wave of turning off the lights, and more and more cities are joining ...

4 When is the specific time? -8: 3-9: 3 on March 28th, 29.