I have written about this before...why not again.
I love the smell of woo in the morning.
Life could be caused by some amorphous energy like 'substance' that is possibly present everywhere on earth. It could be reacting with certain chemical molecules and causing what we experience as 'life'.
Just as electricity gives 'life' to most man made products, this 'life force' could be inducing power and intelligent reactions within organisms.
In Yogic science this substance is called 'Prana'. Once it enters any organism it gives it life and when it departs the organism is dead.
Science has not so far identified any such substance .....but then science always takes its time. Maybe sometime in the future, science may get there.
Usually when science "identifies" a mysterious substance that accounts for some phenomenon, it later finds out it was a mistake. For example:
- caloric was used to explain heat: false
- phlogiston to explain combustion: false
- the luminiferous aether to explain the propagation of light: false
The reason why all of these hypotheses are debunked is that evidence became available that contradicted the idea.
So does your substance have mass? How does it react with chemicals? Why do you think life is not possible without it?
Electricity isn't a substance, by the way, so it is a poor analogy.