Answer:
A. Concentric rings of different agricultural activities surrounding a city in the midwestern United States.
Explanation:
It represents the price variety that a house-hold (or firm) would be responsible to spend at numerous locations in order to accomplish a given level of compensation (monopoly/ profits). The enterprise that has the most high-priced bid rent is probably the movement that will occupy this neighborhood.
Answer:
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The term bioinvasion means that a plant or animal is not native in their current location and often spreads to a dangerous degree which is harmful to it's new environment, to the economy and to human health. An example of this is the Asian longhorned beetle which infected and damaged millions of acres of hardwood trees, as it was introduced in the United States.
I believe the answer is D. The NASA mission which sent a probe to collide with a comet's nucleus is the Deep Impact. It is the first mission sent in order to see the interior of a comet. The comet that was aimed was called the Comet Tempel 1.
