Flexi Says: Non-living things lacks the characteristics of living things. All living organisms need energy to carry out life processes, are composed of one or more cells, respond to their environment, grow, reproduce, and maintain a stable internal environment. Non-living things do not grow through internal metabolic functions but can grow by adding on from the outside such as crystal grows. Some non-living things may seem to be responding, moving, and reacting, but these apparent responses occur only from outside influences.