Answer:
TRUE
Explanation:
Yes, laughing gas can kill if used for recreational purposes without properly safety in place. All of the things listed in question can happen along with hypoxia (low O2 levels) if person does not breathe in O2 in regular intervals.
I will try to give you the best answer by completing your statement.
During a marathon, approximately 99% of your muscles needs are met by the OES or Oxygen Energy System. Energy systems are the ones encharge of distributing the energy you need for a certain act.