Answer:
In a massive star, hydrogen fusion in the core is followed by several other fusion reactions involving heavier elements. Just before it exhausts all sources of energy, a massive star has an iron core surrounded by shells of silicon, sulfur, oxygen, neon, carbon, helium, and hydrogen.
Explanation:
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The answer is A. Fallopian Tube. The ovaries create the egg and the fallopian tubes hold the zygote until it is fertilized, then transfer it to the uterus.
Hello <u>Cafeparisgal</u>
The prokaryotic organism that shows up as the earliest fossils is<u><em> archaea echinoderms.</em></u>
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