There have been varied attempts as species conservation. Zoos have played an important part as a source of new individuals to release to the wild but...

There have been varied attempts as species conservation. Zoos have played an important part as a source of new individuals to release to the wild but this poses some problems. What are the issues related to species conservation? Is there any problem with the zoo method of species conservation? Is it more beneficial to be focusing on habitat preservation or species preservation?