Chemical rocks are sedimentary rocks deposited by direct precipitation of minerals from water.
Economists generally recognize three distinct types of economic system. These are 1) command economies; 2) market economies and 3) traditional economies. Each of these kinds of economies answers the three basic economic questions (What to produce, how to produce it, for whom to produce it) in different ways.
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In a command economy, the government decides the answers to the three basic questions. It decides what will be made, how they will be made, and who will get them. Recently, pure command economies have usually been communist countries. Good examples today would be North Korea and China.
In a market economy, consumers decide the answers to the three questions. They do this by their choices of what to buy. No one tells companies what to make -- they make whatever they think will sell. If they choose wrong, they go out of business. Most developed economies today are predominantly market economies. The US, Japan and Germany are all market economies.
Answer:
Provides easy shipping access for products grown/made in the midwest region, and brings their export business to the south, where it also benefits the economy there.
Explanation:
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Mercury is the smallest out of the four.
