Answer:
the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50 to 600 miles above the earth's surface.
Explanation:
Explanation:
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Answer:
Oxygen is reduced, gaining electrons and hydrogen ions. -second choice
A frame shift mutation is the shift of the genetics of an object.
This type of mutation os caused by the insertion or deletion of nucleotides in a DNA sequence that is not divisible by three.
