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Why are solar eclipses sometimes annular?
Marginal Land
Refers to land that is of limited agricultural productivity due to adverse natural conditions such as aridity or steep terrain.
National Income
The total money earned within a country from economic activities in a specific period, typically a year.
Profits
The financial gain realized when the revenue generated from business activities exceeds the expenses, costs, and taxes needed to sustain the operation.
Economic Rents
Earnings in excess of the minimum amount required to keep a resource in its current use, often due to scarcity or monopolistic control.
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