1. Chemical or Molecular Make up
2. Cellular make up
3. Growth
4. Reproduction
5. Metabolism
6. Excretion
7. Definite Form, Size and Lifespan
8. Sensitive from Stimuli
9. Adaptation
10. Movement
Carbon dioxide is NOT a life characteristic.
Adaptation
From what I can tell, the most prominent characteristic of life is its changeability and unpredictability. These factors affect just about everyone's life, no matter when or where they live or lived.
Primarily so that there can be more Life.
One single characteristic, if you have to pick one, is that it multiplies, or reproduces.
hk
mass
Organization
growth and development
cell divison
adaptation
Reproduction.