Some crime prevention researchers believe that increasing police presence in an area leads to higher crime statistics in that neighborhood. a chain of events can produce this paradoxical result in several ways. place the events in chronological order.

The events in chronological order are:

1. A chain of events can produce this paradoxical result in several ways. 
2. Some crime prevention researchers believe that increasing police presence in an area leads to higher crime statistics in that neighborhood. 

The first sentence is the general idea of how events are sometimes paradoxical in nature. The second sentence is an example of that event.