Is every species necessary or can we let some die out?

There are thousands of species at risk of extinction, and we can’t save them all – how do conservationists think about which ones to focus on?

​There are thousands of species at risk of extinction, and we can’t save them all – how do conservationists think about which ones to focus on? There are thousands of species at risk of extinction, and we can’t save them all – how do conservationists think about which ones to focus on?