Which wildlife conservation marketing campaign pioneered the 'adoption' model where donors symbolically adopt an endangered animal in exchange for regular updates and merchandise?

Conservation organizations use innovative marketing strategies to raise awareness and funds for endangered species. These campaigns often blend emotional storytelling with factual urgency to inspire action. Test your knowledge about some of the most successful wildlife conservation marketing campaigns that have made significant impacts on public awareness and fundraising efforts worldwide.

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WWF's Species Adoption Program (launched 1973)
National Geographic's Photo Ark (launched 2006)
Wildlife Conservation Society's Animal Ambassadors (launched 1985)
The Nature Conservancy's Guardian Species Program (launched 1990)