Why can Maintaining the Biodiversity be very Hard to do?

-Agreeing to the Conversation Scheme may be too Difficult, as maybe Countries need to give Permission. This can spark up Countries refusing to Change, and therefore continuing to reach Havoc on the Environment [Norway, Iceland and Faroe] -Locally, people may Argue if it affects their Source of Income -Conservation Schemes may require lots of Effort to Maintain. This can lead to not knowing if the Scheme is actually Positive or Not, and getting rid of the Scheme may be a complete Nightmare