In addition to the gap seen in the habitable zone, other similar rings are noted at nearly 1.9 and 3.8 billion miles from the young star. (techtimes.com)
However, the biological processes are extremely complex so that very different combinations of climatic conditions may cause similar ring width increments. (climateaudit.org)
Aromatic amino acids (AAA) are amino acids that include an aromatic ring, such as six - carbon benzene (C6H6) or some other similar ring structure. (westonaprice.org)