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→MRS GREN
===About Living Things===
'''Living things''' can all [[Growth|grow]], [[Nutrition|take in food]] and [[water]], [[Movement|move]], [[Sense|sense]] changes to the world around them, [[Excrete|get rid of waste]] and [[Reproduce|make new living things]].
===Examples===
{| class="wikitable"
|+ These are all living things because they can all [[Growth|grow]], [[Nutrition|take in food]] and [[water]], [[Movement|move]], [[Sense|sense]] changes to the world around them, [[Excrete|get rid of waste]] and [[Reproduce|make new living things]].
|-
|[[File:Tree.png|center|200px]]
===Be Careful!===
: [[Fire]] is '''not''' a living thing. You can start a fire without another fire but living things always need other living things to make them. Also fires can spread and they can go out, but they do not grow.: [[Plant|Plants]] '''can''' [[Movement|move]]. For example their [[Flower|flowers]] and [[Leaf|leaves]] can turn to face the [[sunThe Sun]].
==Key Stage 2==
===Meaning===Anything which can [[move]], [[respond]], [[sense]], [[grow]], [[Reproduction|reproduce]], [[excrete]] and get [[nutrition]] (food) is considered to be a living creature.
: '''[[Adjective]]''': Alive
===MRS GREN===
If something is [[Alive]] is must be able to:*'''MovementMove''' - To change direction.*'''ReponseRespire''' - To behave differently when the environment changesGet energy from food.*'''Sense''' - To be able to notice when respond to changes in the environment changes.*'''Grow''' - Get To get bigger.
*'''Reproduce''' - To make copies of itself.
*'''Excrete''' - To get rid of waste products.
==Key Stage 3==
===Meaning===
[[File:Microbe.png|right|300px|thumb|A [[Cell (Biology)|cell]] is the smallest thing considered to be [[alive]].]]
Something is considered to be '''alive''' if it follows all 7 criteria for living creatures: [[MRS GREN]].
===About being Alive===
: All living creatures are made of tiny parts called [[Cell (Biology)|cell]]s.
: These [[Cell (Biology)|cell]]s are the smallest possible living things because they follow the criteria of [[MRS GREN]].
===MRS GREN===
: [[MRS GREN]] stands for:*'''Movement''' - To All living creatures can change directionwhen moving.*'''ReponseRespiration''' - To behave differently when the environment changesAll living creatures can get energy from food.*'''SenseSensitivity''' - To be able All living creatures can respond to notice when changes in the environment changes.*'''GrowGrowth''' - Get All living creatures can get biggerby taking on new material.*'''ReproduceReproduction''' - To All living creatures can make copies of itselfthemselves.*'''ExcreteExcretion''' - To All living creatures can get rid of waste productsmaterials.*'''Nutrition''' - To All living creatures can take in on new materials for movement, growth and repair.