The answer to this question is:
A. Barley and wheat were both civilizations' main crops
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The rotating loops of currents that occur in the ocean are referred to as gyres.
Answer:
The Central idea of the Article is Supply and Demand is the ethic of Employees working and demanding wage. If there is no wage, there is no employee.
Explanation:
Take this and make a paragraph out of it. It should be simple. Just get an Idea of how Supply and Demand works in Economy
