| List I | List II | ||
| 1 | Nitrogen rich fertilizers | p | Ozone depletion |
| 2 | Carbon dioxide | q | Eutrophication |
| 3 | Carbon monoxide | r | Greenhouse effect |
| 4 | CFC’s | s | Air pollutant |
Match the following:
In the following, \( [x] \) denotes the greatest integer less than or equal to \( x \). 
Choose the correct answer from the options given below:
For x < 0:
f(x) = ex + ax
For x ≥ 0:
f(x) = b(x - 1)2