<span><em>The answer would be True</em></span>
20. is Memphis Tennessee
21. is Knoxville Tennessee
Answer:
there were several important cities that came into being as centers of trade and religion, such as Mecca, Medina (Yathrib), Karbala, and Damascus.
Explanation:
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Rocks and minerals showed evidence of <u>oxidation</u> causes by the presence of oxygen in the air. In the second example, <u>organisms</u> actually created new rock after being dissolved in water or buried underground.
<h3>What is oxidation and fossilization?</h3>
Oxidation is the chemical reaction which usually takes place when a substance comes into contact with oxygen or another oxidizing substance.
Fossilization refers to the process of preserving the plant and animals remains in sedimentary rocks.
Oxidation also includes the other reactions as well in which electrons are lost.
Learn more about the oxidation and fossilization here:-
brainly.com/question/9029703
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