In theory, what are free-market economies based upon?
a. The supply of products
b. The consumption of products
c. Pure competition
d. Government policies
ANS: C
A true free-market economy only exists in theory. Pure competition should ensure that no single buyer
or seller can control or manipulate the market. Information can be found in the section Marine
Resources Are Subject to the Economic Laws of Supply and Demand.
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When rubbing your hands together, you
A. cannot push harder on one hand than the other hand. B. can push harder on one hand than the other hand. C. defy the laws of physics. D. need more information
Generally, between an advancing cold front, and a warm front farther to the east, the wind blows from the
A) south. B) north. C) west. D) northeast.
Metamorphism during orogeny includes the contact metamorphism aureole and regional metamorphism.
a. true b. false
Wildfires benefit forests in many ways. Which is NOT one of these?
a. thinning closely spaced trees b. reducing understory fuel c. permitting growth of different tree species d. permitting growth of different tree ages e. improving landscape views for inhabitants