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Ulleksa [173]
3 years ago
7

Which of these best explains why the asthenosphere is always in motion?

Geography
1 answer:
8_murik_8 [283]3 years ago
8 0
Heat makes the semi-fluid particles rise up and then come down on cooling. This causes convection currents wich moves the tectonic plates.
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1. Which is an<br> example of a source that gives firsthand information about an event?
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The one that is an example of a source that gives firsthand information about an event is option A. Article.

Oral histories, newspaper or journal articles, and memoirs or autobiographies are examples of primary sources created after the event or time in question but offering first-hand accounts.

Primary data is a type of data that is collected by researchers directly from main sources through interviews, surveys, experiments, etc. Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it.

<h3>What are the examples of primary sources of data?</h3>

Some examples of primary source formats include:

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Therefore, the correct answer is as given above

learn more about primary sources of data: brainly.com/question/26928042

#SPJ1

The complete question goes thus:

Which is an example of a source that gives firsthand information about an event?

A. Article

B. Letter

C. Website

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