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List at least three ways that boy and girl peer/friendship groups tend to differ.
Marginal Cost
The expense associated with manufacturing or providing an additional unit of an item or service.
Marginal Benefit
The additional satisfaction or utility gained by consuming one more unit of a good or service.
Diamond
A precious gemstone formed from carbon under high pressure and temperature, valued for its brilliance, clarity, and rarity.
Water
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is essential for the survival of most known forms of life.
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