Answer:
Step-by-step explanation:
The word document in this sentence is trying to say that that the pool of water that contains the spadefoots is very small and has a high probability of disappearing. If that were to happen they would not be able to collect the necessary information so that they can classify that body of water as necessary to prevent the extinction of the spadefoots and prevent anyone from getting rid of it and building on top of it as they want to do in this story.