The astronomical event that represents the great serpent mound is Halley's Comet.
Hydrogen is used by plants which combine it with carbon during the photosynthesis process and release oxygen into the atmosphere which is used by all living beings.
<span>Because he had ideas way ahead of his time. He had many gifts and abilities. He was an artist, inventor, scientist etc. For example, he did many sketches of machines that looked like inventions made a few centuries later:flying machine, tank, helicopter. He also drew detailed images pf some of the first autopsies to document biological anatomy.
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Answer:
the symmetric pattern shown where plates are moving away from each other
Explanation:
I hope this helps ;D
The answer is the red sea
