Answer:
1st blank is tropical 2nd blank is polar
Answer: As the demand for a certain type of jobs increase, the amount of people who are willing to supply their labor also increased.
Explanation:
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Agriculture and pastoralism<span> began to transform human societies. </span>Pastoralism<span> and</span>agriculture led<span> to more reliable and </span>abundant food supplies<span> which increased population. Surpluses of </span>food<span> and other goods </span>led<span> to specialization of labor, including new classes of artisans and warriors, and the development of elites</span>
