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Biodiversity under threat. (a) Plains zebra (Equus quagga) and blue wildebeest (Connochaetes taurinus) by Nairobi, Kenya (© Jakob Bro-Jørgensen). (b) Carcass of a Peter's duiker (Cephalophus callipygus) for sale in Makokou, Gabon (© Natalie van Vliet). (c) South American sea lions (Otaria flavescens) in Valdivia, Chile (© Kristine Meise). (Online version in colour.)
