You are presented with the question "where does being buried under soil and mud change peat into coal through extreme heat and pressure over a long period of time?" and the following answer choices: 
- watershed
 - alluvial
 - wetland
 - deltas
 - erosion
 - houses
 - earth
 - lakes

Now knowing that being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time and well, a swamp is a type of wetland, choose the best answer.


 

   wetland      