Life is a unique phenomenon of organisms, which is composed of polymer nucleic acid protein and other substances. Different from non-living things, living things can form their own bodies and reproduce their offspring by using external substances, grow and develop according to genetic characteristics, and often show the ability to adapt to the environment when the environment changes.
Life is the consciousness of existence expressed by the growth, development, reproduction, metabolism, stress, evolution, movement, behavior, characteristics and structure of organisms.
Life or survival consciousness is the essence, internal regulation and component of living things, and it is the universal law followed by endless changes of living things. Biology is the unity of life, survival consciousness and things.
The growth, development, reproduction, metabolism, stress, movement, behavior, characteristics and structure of organisms are all manifestations of life or survival consciousness. By observing the manifestations of living things, we can judge whether an object has life or survival consciousness, whether it is biological or abiotic.