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  2. Trisulfur - Wikipedia

    en.wikipedia.org/wiki/Trisulfur

    The S 3 molecule, known as trisulfur, sulfur trimer, thiozone, or triatomic sulfur, is a cherry-red allotrope of sulfur.It comprises about 10% of vaporised sulfur at 713 K (440 °C; 824 °F) and 1,333 Pa (10.00 mmHg; 0.1933 psi).

  3. Biology - Wikipedia

    en.wikipedia.org/wiki/Biology

    Biology is the scientific study of life. [ 1 ] [ 2 ] [ 3 ] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. [ 1 ] [ 2 ] [ 3 ] For instance, all organisms are composed of at least one cell that processes hereditary information encoded in genes , which can be transmitted ...

  4. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Developmental psychobiology posed this question since the lack of knowledge about the precise coordination of all cells, even those not related anatomically, in space and time during the embryonic period does not allow us to understand what forces at the cellular level coordinate four very general classes of tissue deformation, namely: tissue ...

  5. Biology 101 - Wikipedia

    en.wikipedia.org/wiki/Biology_101

    "Biology 101" is the third season premiere of Community and the 50th episode of the series overall. The episode originally aired on September 22, 2011 on NBC . The episode was written by Neil Goldman and Garrett Donovan and directed by Anthony Russo .

  6. Secondary cell wall - Wikipedia

    en.wikipedia.org/wiki/Secondary_cell_wall

    In the secondary cell wall of fibres of trees a low microfibril angle is found in the S2-layer, while S1 and S3-layers show a higher MFA . However, the MFA can also change depending on the loads on the tissue. It has been shown that in reaction wood the MFA in S2-layer can vary. Tension wood has a low MFA, meaning that the microfibril is ...

  7. Ninth grade - Wikipedia

    en.wikipedia.org/wiki/Ninth_grade

    In the science curriculum, ninth grade students are required, in most areas, to take biology. But they can take different courses before they take Biology such as Integrated Science. [citation needed]. Other forms of sciences such as basic physical science or earth sciences could also be part of the curriculum as well, depending on the school ...

  8. Karoline Leavitt, youngest White House press secretary, makes ...

    www.aol.com/karoline-leavitt-youngest-white...

    White House press secretary Karoline Leavitt made her debut at the first press briefing of President Donald Trump's second term on Tuesday, making history as the youngest in her role to stand ...

  9. List of examples of convergent evolution - Wikipedia

    en.wikipedia.org/wiki/List_of_examples_of...

    C4 plants use a different metabolic pathway to capture carbon dioxide but also have differences in leaf anatomy and cell biology compared to most other plants. Trunk, a single woody stem came about in unrelated plants: paleozoic tree forms of club mosses, horsetails, and seed plants.