Conservation
volume
British pronunciation/kˌɒnsəvˈe‍ɪʃən/
American pronunciation/ˌkɑnsɝˈveɪʃən/
01

préservation

an occurrence of improvement by virtue of preventing loss or injury or other change
02

préservation

the protection of the natural environment and resources from wasteful human activities
03

préservation

(physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
04

préservation

the protection and repair of objects or buildings of historical or artistic value
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