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  2. Birthstone - Wikipedia

    en.wikipedia.org/wiki/Birthstone

    A birthstone is a gemstone that represents a person's birth period, usually the month or zodiac sign. Birthstones are often worn as jewelry or a pendant necklace.

  3. Timeline of the evolutionary history of life - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the...

    With only a handful of species surviving today, the Nautiloids flourished during the early Paleozoic era, from the Late Cambrian, where they constituted the main predatory animals. [71] Haikouichthys , a jawless fish , is popularized as one of the earliest fishes and probably a basal chordate or a basal craniate . [ 72 ]

  4. History of life - Wikipedia

    en.wikipedia.org/wiki/History_of_life

    The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...

  5. History of biology - Wikipedia

    en.wikipedia.org/wiki/History_of_biology

    The history of biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine and the works of Aristotle, Theophrastus and Galen in the ancient Greco-Roman world.

  6. The 43 best Advent calendars of 2024 - AOL

    www.aol.com/43-best-advent-calendars-2024...

    The sauces come in 2-ounce jars, and three of the flavors, along with four of the spice blends, are brand new — whoever gets this limited-edition Advent calendar will be among the first to try them.

  7. 20 of the very best mother of the bride gifts for the wedding day

    www.aol.com/lifestyle/best-mother-of-the-bride...

    Animals. Business. Entertainment. Fitness. Food. Games. Health. ... gift her this personalized birthstone necklace to wear on the big day. Customize it however you like: choose up to 12 gemstones ...

  8. I'm a Sales and Deals Editor—Trust Me, These are the Best ...

    www.aol.com/im-sales-deals-editor-trust...

    You can customize it with different finishes (rose, yellow and white gold or vermeil) and your (or a giftee's) very own birthstone. It's chic, petite and surely something that will be cherished ...

  9. Tree of life (biology) - Wikipedia

    en.wikipedia.org/wiki/Tree_of_life_(biology)

    Edward Hitchcock's fold-out paleontological chart in his 1840 Elementary Geology. Although tree-like diagrams have long been used to organise knowledge, and although branching diagrams known as claves ("keys") were omnipresent in eighteenth-century natural history, it appears that the earliest tree diagram of natural order was the 1801 "Arbre botanique" (Botanical Tree) of the French ...

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