Q: 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) Sunlight passes through the glass into the greenhouse (2) The absorbed sunlight is converted to heat (3) The heat cannot escape the glass (4) The heat is trapped in the greenhouse (5) The hot air rises (6) The colder air at the top is pushed to the bottom (7) The colder air is then warmed by the floor and the plants.  
Where does the following step fit into the given list of steps: The plants and floor absorb the the sunlight 
A:
 After step 1. 