The prefix 'enem' does not have a specific meaning in English. It is possible that you may be referring to a prefix with a misspelling. If you provide the correct prefix, I can give you the meaning.
Enem is a non mandatory national examination in Brazil that
evaluates the high school education.
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The average global life expectancy is around 72.6 years. However, life expectancy can vary significantly by country and region due to factors such as healthcare access, socioeconomic status, and lifestyle choices.