Examlex
The beginning of menstruation at puberty is known as:
Price Range
The spread between the highest and lowest prices of goods or services in the market.
Demand
It is the quantity of a good or service that consumers are willing and able to purchase at a given price over a specified period of time.
Perfectly Elastic
Perfectly elastic refers to a situation where the quantity demanded or supplied of a good changes infinitely in response to any change in price, represented by a horizontal demand or supply curve.
Inelastic
Describes a situation where the demand or supply for a product doesn't change significantly when the price of the product changes.
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