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Light frequency from an incandescent lamp depends on the
Complements
Goods or services that are used together, where the use of one increases the value or demand for the other, like smartphones and data plans.
Substitutes
Goods or services that can be used in place of each other to satisfy consumer preferences or needs.
Substitute Product
A good or service that can be used in place of another to satisfy similar needs or desires.
Complements
Products or services that are used together, where the consumption or use of one increases the demand for the other.
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