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.
See one example below:
Problem: Steps: (1) Solar radiation reaches Earth's atmosphere (2) Some is reflected back into space (3) The rest of the energy is absorbed by land and oceans, heating the Earth (4) Some of this heat is trapped by greenhouse gases in the atmosphere (5) Human activities such as burning fuel are increasing the amount of greenhouses gases (6) This causes more heat radiation to stay trapped in our atmosphere (7) The Earth's temperature rises  
Where does the following step fit into the given list of steps: Heat radiates from Earth to space 
Solution:  After step 3. 
Explanation: The correct answer is 'After step 3'. The given step is 'Heat radiates from Earth to Space'. Step 3 introduces a new concept of generated heat. Step 4 mentions that the heat is trapped into the atmosphere. In order for the heat to get to the atmosphere, the heat must radiate from Earth to space. Therefore, the correct answer is 'After step 3.'

Problem: Steps: (1) The pollution negatively affects the water quality (2) The pollution negatively affects the health of plants and animals (3) The plants and animals have shorter, less healthy lives (4) The plants and animals do not reproduce very well (5) The number of plants and animals decreases over time (6) The quality of water gets worse and worse as there are no plants or animals to clean it (7) Eventually there is nothing living in the water and it is unusable  
Where does the following step fit into the given list of steps: Pollution enters natural water sources such as rivers and lakes 
Solution:
 Before step 1. 