Examlex
What type of signals do bats use to detect their prey?
Sales
The exchanges of goods or services for money; the action of selling something.
Advertising
The activity or profession of producing advertisements for commercial products or services.
Increase
A rise or growth in quantity, size, strength, or another measure.
Dollars
A unit of currency used in various countries, including the United States, Canada, Australia, and New Zealand.
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