What Do Viking,Pathfinder,and the Two Mars Rovers Have in Common

question 34

Multiple Choice

What do Viking,Pathfinder,and the two Mars Rovers have in common?

• A) They all found proof of life on Mars.
• B) They all could move over the surface of Mars to examine the rocks.
• C) They all were designed to investigate Mars' potential for life.
• D) They all are still transmitting data from Mars to Earth.
• E) They all proved Mars was too inhospitable for life to have every existed there.

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Definitions:

Marginal Benefit

The heightened enjoyment or usefulness one receives by using an additional unit of any good or service.

Law of Diminishing Returns

A principle stating that as one factor of production is increased while others are held constant, the resulting addition to output will eventually decrease.

Coase Theorem

An economic theory stating that if private parties can bargain without cost over the allocation of resources, they can solve the problem of externalities on their own.

Director of Housing

A position responsible for overseeing housing programs, policies, and services, typically within a governmental or nonprofit organization.