Yasuni in Ecuador 's Amazon region is thought to be the world 's most biodiverse forest . Yasuni National Park in Ecuador 's Amazon region is thought of as the most biologically diverse forest in the world . Comment: Threat to the area comes from huge oil reserves deep beneath the forest floor .
Yasuni in Ecuador 's Amazon region is thought to be the world 's most biodiverse forest . Comment: Threat to the area comes from huge oil reserves deep beneath the forest floor .