The demand for fins in on of the greatest threats facing shark population around the world, and fins from as many as 73 million shark end up in the global shark fins trade every year.
The demand for fins in on of the greatest threats facing shark population around the world, and fins from as many as 73 million shark end up in the global shark fins trade every year.
You have a minor typo in the following sentence:
It should be one of the instead of on of the.