Given the task definition and input, reply with output. Given a list of steps and an additional step, determine where the step fits into the original list of steps. A correct answer, correctly places the given step into the set of steps so that it creates a new plausible set of steps. Output must be formatted as 'After step n', where n is the step number after which the given additional step is to be inserted.

Steps: (1) The trees die off (2) The dead material provides nutrients for more trees (3) The rising trees provide shelter (4) And more organisms begin to thrive (5) The ecosystem known as a forest is made.  
Where does the following step fit into the given list of steps: Networks of trees start forming 

 Before step 1. 