Anew tax on real estate is an example of a(n):
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demand
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The correct answer to the question above is demand. A new tax on real estate is an example of a demand. A demand is an economic principle in which it describes as the consumer's desire to pay a higher or whatever price it may take just to gain a better and higher quality of goods, products, or services. 

Answermaritime tropical;

Physical systems is the answer