Behavior

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Behaviour (or behavior) is the observed reaction which occurs when an organism is given a stimulus.

Some organisms are more complex than others in that they are thought to be aware of their surroundings. Such organisms have conscious and unconscious behaviour. They are aware of the former, but not of the latter. Humans will pull their hand back if they accidentally put it in hot water, without thinking. This is done because organisms want to avoid pain and will pull away from the source of the pain.

Behaviour is linked to the nervous system as well as the endocrine system. It is those systems that react. Behaviour is also linked to learning. Organisms which are more complex can learn better than those that are simpler. For organisms, learning means a change of behaviour in response to a situation that was encountered before.

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