Being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time, and bogs are composed of peat. Given these facts, being buried under soil and mud changes what into bogs through extreme pressure and heat among the following options:
- graptolites
 - erosion
 - vegetation
 - Sediment
 - ice
 - q-particles
 - fossil fuels
 - water


 

   vegetation      