The Possible Collision of a Large Meteorite with Earth 65

question 47

Multiple Choice

The possible collision of a large meteorite with Earth 65 million years ago may explain

• A) the existence of Gondwana.
• B) continental drift,according to Alfred Wegener.
• C) the mass extinction that killed off the dinosaurs.
• D) contemporary atmospheric conditions on Earth.
• E) the breaking apart of Gondwana.

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Definitions:

Robert Axelrod

A political scientist known for his work on the theory of cooperation and competition, including the development of the iterated prisoner's dilemma model.

Tit-for-tat

A strategy in game theory where a player responds to an opponent's action with equivalent action, promoting cooperation by rewarding cooperation and punishing defection.

Prisoner's Dilemma

A scenario in game theory that illustrates why individuals might not cooperate, even when it seems that doing so would be in their collective best interest.

Zero-sum Game

A situation in competitive theory where one party's gain is exactly balanced by the losses of others. In a zero-sum game, the total benefit to all players in the game, for every combination of strategies, always adds up to zero.