The section of the Hertzsprung-Russell diagram that has the coolest and the brightest stars are the super-giants.
<h3>What is the Hertzsprung-Russell diagram?</h3>
This is a diagram that is used in the field of astronomy to show the absolute brightness of stars against their temperatures.
The super giant stars occur at the upper right of the diagram. In order to find the super giants on this graph, you have to find them at the top right.
Read more on the Hertzsprung-Russell diagram here:
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It is called as "Plate Tectonics".
Explanation:
The periodic table is a chart or table of the elements arranged into columns and rows according to their physical and chemical properties.
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Answer:
B. the Appalachian Mountains and the Laurentian Mountains
