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Describe two methods that have already been used to study extrasolar planets, and which onegives us the most information.
Demand Changes
Variations in the desire or need for a product or service, influenced by factors like price, income levels, and consumer preferences.
Price
The value that must be exchanged to obtain a good or service.
Quantity
Quantity refers to the amount or number of a material or immaterial good or service.
Marginal Cost
The price of manufacturing one additional product or service unit.
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