Which innovative advertising technique did the World Wildlife Fund (WWF) use in their award-winning 2008 campaign that showed endangered animals' habitats disappearing in real-time?

Conservation organizations rely on effective marketing to raise awareness and funding for endangered species and habitat protection. Test your knowledge about how wildlife conservation brands communicate their mission! This question focuses on innovative advertising techniques that have significantly impacted public awareness and support for animal conservation efforts.

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Interactive digital billboards that revealed endangered species when pedestrians stopped to look at them
The 'WWF Blackout' where they convinced major websites to go dark for one hour to represent species extinction
The 'Earth Hour' campaign encouraging people to turn off lights, which wasn't primarily about animal conservation
QR-coded ads that, when scanned, showed time-lapse videos of forests disappearing to represent habitat loss