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  2. 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 ...

  3. Morning sickness - Wikipedia

    en.wikipedia.org/wiki/Morning_sickness

    Morning sickness, also called nausea and vomiting of pregnancy (NVP), is a symptom of pregnancy that involves nausea or vomiting. [ 1 ] Despite the name, nausea or vomiting can occur at any time during the day. [ 2 ] Typically the symptoms occur between the 4th and 16th week of pregnancy. [ 2 ]

  4. Timeline of the evolutionary history of life - Wikipedia

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

    The earliest evidence for life on Earth includes: 3.8 billion-year-old biogenic hematite in a banded iron formation of the Nuvvuagittuq Greenstone Belt in Canada; [30] graphite in 3.7 billion-year-old metasedimentary rocks in western Greenland; [31] and microbial mat fossils in 3.48 billion-year-old sandstone in Western Australia.

  5. Timeline of human evolution - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_evolution

    They first appeared in the fossil record around 66 million years ago, soon after the Cretaceous–Paleogene extinction event that eliminated about three-quarters of plant and animal species on Earth, including most dinosaurs. [25] [26] One of the last Plesiadapiformes is Carpolestes simpsoni, having grasping digits but not forward-facing eyes ...

  6. Study finds why morning sickness is more severe for some ...

    www.aol.com/study-finds-why-morning-sickness...

    Previous studies have suggested sickness and nausea in pregnancy could relate to GDF15 being produced by the placenta, but researchers said the “full mechanistic understanding is lacking”.

  7. Scientists discover cause of pregnancy morning sickness ... - AOL

    www.aol.com/news/scientists-discover-cause...

    In a breakthrough discovery, scientists have identified the cause of pregnancy morning sickness, raising hope for a possible cure. Researchers found that a hormone exposed to pregnant women ...

  8. Earliest known life forms - Wikipedia

    en.wikipedia.org/wiki/Earliest_known_life_forms

    The age of Earth is about 4.54 billion years; [7] [33] [34] the earliest undisputed evidence of life on Earth dates from at least 3.5 billion years ago according to the stromatolite record. [35] Some computer models suggest life began as early as 4.5 billion years ago. [36] [37] The oldest evidence of life is indirect in the form of isotopic ...

  9. Signs and symptoms of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Signs_and_symptoms_of...

    Carpal tunnel syndrome – Carpal tunnel syndrome can occur in up to 70% of pregnant women and typically has a benign course. [16][17] It manifests as pain, numbness, and tingling in the thumb, index finger, middle finger and the thumb side of the ring finger. [18] The symptoms of carpal tunnel syndrome during pregnancy are usually mild and do ...

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