Cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy, and without enough oxygen cell respiration is reduced, leaving a person tired and lacking in energy. Given these facts, a person is what without cellular respiration among the following options:
- major threat to health
 - dormant state
 - They may not survive.
 - breathing deeply
 - tired and lacking energy
 - hydrated and full
 - dead organisms
 - awake and sleepless


 

     tired and lacking energy    