Answer:
B. Petroleum
Explanation:
Silver is second.
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Answer:
Production is the process of combining various material inputs and immaterial inputs (plans, know-how) in order to make something for consumption (output). It is the act of creating an output, a good or service which has value and contributes to the utility of individuals
Explanation:
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The more dense middle part of the after-eruption topographic map shows the concentration of new mountains as a result of the volcanic eruption.
<h2>What is a topographic map?</h2>
A topographic map refers to map that shows the shape and elevation of the land surface features through the use of contour lines.
In the map in question, we will observed the contours lines is more dense in the after-eruption map than former.
In conclusion, the more dense middle part of the after-eruption topographic map shows the concentration of new mountains as a result of the volcanic eruption.
Read more about topographic map
<em>brainly.com/question/1026002</em>
