Life is a system because it has interrelated elements (organs) and a purpose.
A system has a flow (inflow->stock-> outflow). Therefore you can also say life is a stream.
The above video shows what life is. We take food. Food is not for our energy but makes our body.
When we look at those processes in detail, we break our cells first and compose them to maintain balance or adapt to the environment. It is called “dynamic equilibrium.”
As you can see from the charts above, life is climbing the hill against the natural law (Second law of thermodynamics)with decompositions and compositions of cells.
Every day, you gradually break yourself and make new. Finally, around one year later, you will be completely new if you can keep the balance to adapt new environment. To enjoy hill walking, you need the courage to change yourself first.
You are a river.
You are a flower.
You are a rainbow.
Reference: Biodiversity is the Dynamic Equilibrium of the Earth – The Beauty of Oikos – Shinichi Fukuoka