Air cargo, commonly known as air freight, is collected by firms from shippers and delivered to customers. Aircraft were first used for carrying mail as cargo in 1911. Eventually manufacturers started designing aircraft for other types of freight as well.
Economics and marketing. The consumer is the one who pays something to consume goods and services produced. As such, consumers play a vital role in the economic system of a nation. Without consumer demand, producers would lack one of the key motivations to produce: to sell to consumers. The consumer also forms part of the chain of distribution.
The definition of consumer behavior is the study of how, where, when and why people buy, use and get rid of products or services. An example of consumer behavior is the study of where and when people buy a new type of kitchen gadget. 1  Link/Cite.  Dictionary.