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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]], 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]]
|Mushrooms are '''living things'''.
|}
===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 aim towards the turn to face [[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.
*'''Nutrition''' - To take in new materials for growth and repair.
==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 follow the criteria of [[MRS GREN]].
===MRS GREN===
: [[MRS GREN]] stands for:
*'''Movement''' - All living creatures can change direction when moving.
*'''Respiration''' - All living creatures can get energy from food.
*'''Sensitivity''' - All living creatures can respond to changes in the environment.
*'''Growth''' - All living creatures can get bigger by taking on new material.
*'''Reproduction''' - All living creatures can make copies of themselves.
*'''Excretion''' - All living creatures can get rid of waste materials.
*'''Nutrition''' - All living creatures can take on new materials for movement, growth and repair.