Examlex
Alejandro is three years old.He is now able to sort his blocks by color.Alejandro has developed:
Memory Cards
Portable electronic storage devices used for storing digital information in various electronic devices, such as cameras, phones, and computers.
Cross Elasticity of Demand
A measure of how the quantity demanded of one good changes in response to a price change in another good.
Substitutes
Goods or services that can replace each other in usage, offering alternative choices to consumers.
Complements
Goods or services that are used together, where the use of one increases the demand for the other.
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