Life applies only to physical entities with integrity.
=== Biophysics ===To reflect the minimum phenomena required, other biological definitions of life have been proposed, with many of these being based upon chemical systems
Organisms, or the individual entities of life, are generally thought to be open systems that maintain homeostasis, are composed of cells, have a life cycle, undergo metabolism, can grow, adapt to their environment, respond to stimuli, reproduce and evolve over multiple generations

