Unlimited wants - Human wants go on multiplying with the expansion of education, knowledge, scientific advancement and economic growth. A man can not satisfy all of his wants and therefore he has to make a choice in order of urgency.
Limited resources - The resources are limited in relation to need for them. It is the main cause of economic problem.
Alternative use of resources - A resource can be utilized in a different way and for different purposes. Therefore choice has to be made among different uses of resources.
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amar amrit
Reasons-