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Vladimir79 [104]
3 years ago
10

based on the diagram, how many times has the earth's magnetic field reversed during the past four million years?

Social Studies
1 answer:
juin [17]3 years ago
7 0
Nine times during the past 4 million years
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One of the results of the increase in the older population of the united states is a future problem for the Social Security system.

<h3>What population of the United States is referred to as the older population?</h3>

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Read more on the social security system here: brainly.com/question/1156607

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