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How many geometrical and structural isomers are there of butene?
Pre-existing
Existing before a specified time or event.
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The common beliefs, values, or norms that are accepted and recognized within a group or society, facilitating communication and cooperative action.
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Indicators or signals that suggest or convey an individual's or group's social standing, prestige, or rank within a society.
Skin Color
A physical characteristic resulting from the pigment melanin, which varies widely among humans and is often used as a basis for social classification and identity.
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