During Glacial Maxima and Attendant Lowered Sea Level, Human Groups

question 74

Multiple Choice

During glacial maxima and attendant lowered sea level, human groups could have migrated to Australia:

• A) by walking across the land bridge connecting Sunda and Sahul
• B) via dry or only partially wet land by waiting for the tide to go out and walking from island to island across the Wallace sea
• C) only by crossing a sea barrier of a minimum of several hundred miles wide across the Wallace Sea
• D) by a series of hops from island to island across the Wallace Sea

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Definitions:

Marginal Revenue Curve

A graphical representation showing how marginal revenue varies as the quantity of the product sold changes.

Pure Monopolist

A single seller in a market that produces a unique product without close substitutes, controlling the market price.

Perfect Competitor

A theoretical market structure where many firms sell identical products, and no single seller can influence the market price.

Perfect Competition

A market structure characterized by many buyers and sellers, homogenous products, and free entry and exit, leading to efficient outcomes.