Movement - an action by an organism or part of an organism causing a change of position or place.
Sensitivity - the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.
Growth - a permanent increase in size and dry mass by an increase in cell number or cell size or both.
Excretion - removal from organisms of the waste products of metabolism, toxic materials, and substances in excess of requirements.
Nutrition - taking in of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds and ions and usually need water.
There are seven characteristics of living organisms.
Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition
If something does not carry out all of these life processes, it is either dead or non-living.
These life processes criteria can be remembered using the acronym MRS GREN
