Living things have certain life processes in common and there are seven characteristics of living organism. These seven things are used to classify an organism as being alive. Often, it is easy to tell if something is living or not. The phrase MRS GREN.C is a way to remember them:
Movement
Reproduction
Sensitivity
Growth
*Respiration (Respiration is not just about breathing, but this word is about making energy inside your cells)
*Excretion (eg. sweat, urine, faeces, tears, mucus)
Nutrition
.
Cell