Environment ministers from around the world tried to wrap up a Un meeting to preserve nature on Friday but remained split on targets to fight losses in animal and plant species that support livelihoods and economies. Delegates from nearly 200 countries have gathered in Nagoya, Japan, for a two-week meeting to map out goals to protect oceans, forests and rivers as the world faces the worst extinction rate since the dinosaurs vanished 65 million years ago. The meeting has aimed to push governments and businesses into taking sweeping steps to protect ecosystems long taken for granted but are worth trillions of dollars by providing sources for food, water, tourism and industry. But envoys in Nagoya have been split on how ambitious they should be in the new conservation targets after they failed to meet a goal for a significant reduction in losses of biological diversity by 2010.