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3 animals that keep their whole ecosystem together

What do gray wolves, elephants, and parrotfish have in common? They're all keystone species, which means they have an ...
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A keystone species of Panamanian forests, D. oleifera fruits and seeds are a crucial food source for rainforest animals. (IMAGE)

Also known as the eboe, choibá, tonka bean or almendro, Dipteryx oleifera is native to Honduras, Nicaragua, Costa Rica, Panama, Colombia, and Ecuador. Its hard wood is used in construction, and it ...