Why Are Different Spectral Lines, Such as Helium, More Visible

question 109

Essay

Why are different spectral lines, such as helium, more visible in the corona than in the Sun's normal absorption spectrum?

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Definitions:

Common Ancestor

An ancestor that two or more descendants have in common, where it is the most recent individual from which all organisms in a group directly descend.

Hox Genes

A group of related genes that control the body plan of an embryo along the head-tail axis.

WNT Genes

A family of genes that encode for signaling molecules involved in the regulation of embryonic development and the control of cell processes in adult animals.

Land Animals

Organisms that live primarily or exclusively on land, as opposed to aquatic or air environments.