What do you suppose the author meant by a “threshold of irreversibility”?

What the author means that even if the process of the ecosystem is irreversible, it is still possible for it to change through the course but still following the cycle in its process. Although, there are still boundaries in how it will cover the system.

Explanation:

What the author means that even if the process of the ecosystem is irreversible, it is still possible for it to change through the course but still following the cycle in its process. Although, there are still boundaries in how it will cover the system.        

hope this helps! :)        

answer; i believe the correct answer is (anemia);