Detailed Instructions: 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.
Problem:Steps: (1) These pores are called stomata (2) Water is absorbed by the roots (3) It passes through vessels in the stem on its way to the leaves (4) Sunlight is absorbed by a green chemical in the leaves.  
Where does the following step fit into the given list of steps: Carbon dioxide from the air passes through small pores (holes) in the leaves 
Solution:
 Before step 1. 