MRS GREN is not a real person, but is simply a scientific acronym. Mrs Gren is the basis of classifying whether or not something is living or none living. Each letter stands for a common process that is done by all living things.
Movement
Respiratory
Sensitivity
Growth
Reproductive
Excretory
Nutrition
Movement
Movement is crucial for anything that is living. Animals move everyday for their own basic survival against possible predators and for catching prey.
Respiratory
Without a respiratory system, living things can't get rid of various chemical (gaseous) waste. For example, animals use their respiratory system to get rid of the carbon dioxide produced after inhaling oxygen.
Sensitivity
Sensitivity is used by all living things to prevent them from sickness, changes in weather and attacking predators.
Growth
Growth is what physically displays a developed or developing body. As living things develop, they usually grow and increase their size, height or look.
Reproductive
The reproduction of a living thing is important. Reproduction is when a living thing is increased in amounts or in a way, 'cloned'.
Excretory
Excretory is a living thing's way of releasing various kinds of waste.
Nutrition
Nutrition is what living things need to increase various parts of their body to develop. Nutrition is also used to help other body systems to increase their performance.
Movement is crucial for anything that is living. Animals move everyday for their own basic survival against possible predators and for catching prey.
Respiratory
Without a respiratory system, living things can't get rid of various chemical (gaseous) waste. For example, animals use their respiratory system to get rid of the carbon dioxide produced after inhaling oxygen.
Sensitivity
Sensitivity is used by all living things to prevent them from sickness, changes in weather and attacking predators.
Growth
Growth is what physically displays a developed or developing body. As living things develop, they usually grow and increase their size, height or look.
Reproductive
The reproduction of a living thing is important. Reproduction is when a living thing is increased in amounts or in a way, 'cloned'.
Excretory
Excretory is a living thing's way of releasing various kinds of waste.
Nutrition
Nutrition is what living things need to increase various parts of their body to develop. Nutrition is also used to help other body systems to increase their performance.