You are presented with the question "Glaciers melt via" and the following answer choices: 
- vaporization
 - thermal conduction
 - Water expanding
 - colder temperatures
 - mountain sources
 - internal combustion
 - decreased wind
 - Physical weathering

Now knowing that when a cooler object touches a warmer object , thermal conduction occurs and when the glacier moves into warmer areas the ice melts and sediments are deposited, choose the best answer.


 

  thermal conduction       