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) 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 
 Before step 1. 

Steps: (1) Water in the clouds becomes very cold (2) The cold water forms ice crystals (3) Form snowflakes (4) The snowflakes fall to the ground.  
Where does the following step fit into the given list of steps: The ice crystals grow by absorbing surrounding water droplets 
 After step 2. 

Steps: (1) A larva is born (2) The caterpillar eats constantly until it grows bigger (3) The caterpillar starts to form a cocoon around itself (4) After some time the cocoon hatches (5) And a butterfly is born.  
Where does the following step fit into the given list of steps: The caterpillar becomes a pupa 

 After step 3.