Fact 1: Electron transport is the final stage of aerobic respiration.

Fact 2: Long distance running, swimming, bicycling, and aerobic activity rely on endurance.

Given the two facts above, answer the question "Long distance running involves  transport of" with the following options: 
- heat energy
 - electrons
 - heat produced
 - loose dirt
 - Energy
 - Energy.
 - Weight
 - movement


 

  electrons       