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  2. Scientific racism - Wikipedia

    en.wikipedia.org/wiki/Scientific_racism

    Scientific racism was also used as a justification for the Emergency Quota Act of 1921 and the Immigration Act of 1924 (Johnson–Reed Act), which imposed racial quotas limiting Italian American immigration to the United States and immigration from other southern European and eastern European nations. Proponents of these quotas, who sought to ...

  3. Red cabbage - Wikipedia

    en.wikipedia.org/wiki/Red_cabbage

    The juice of red cabbage can be used as a homemade pH indicator, turning red in acid and green/yellow in basic solutions. When cooking, red cabbage will normally turn blue; adding vinegar or acidic fruit to the pot is necessary to retain the cabbage's red colour. [4] Red cabbage needs well-fertilized soil and sufficient humidity to grow.

  4. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH ( acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [ 1] Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...

  5. Cabbage - Wikipedia

    en.wikipedia.org/wiki/Cabbage

    Cabbage. Cabbage, comprising several cultivars of Brassica oleracea, is a leafy green, red (purple), or white (pale green) biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is descended from the wild cabbage ( B. oleracea var. oleracea ), and belongs to the "cole crops" or brassicas, meaning it is closely related ...

  6. How the Cabbage Patch Kids craze of 1983 helped create ... - AOL

    www.aol.com/entertainment/cabbage-patch-kids...

    Billion Dollar Babies executive producer Dan Goodman draws a direct line from the Cabbage Patch Kids craze to future Black Friday mob scenes. "I think there's no denying the fact that it had a ...

  7. Anthocyanin - Wikipedia

    en.wikipedia.org/wiki/Anthocyanin

    Purple cauliflower contains anthocyanins. Anthocyanins (from Ancient Greek ἄνθος (ánthos) 'flower' and κυάνεος / κυανοῦς (kuáneos/kuanoûs) 'dark blue'), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig ...

  8. Learning science might help kids read better - AOL

    www.aol.com/learning-science-might-help-kids...

    The Hechinger Report explains how the evidence is increasing for building students' background knowledge of the world, an indirect way of teaching reading comprehension.

  9. History of immigration to the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_immigration_to...

    The immigration of Eastern Orthodox ethnic groups was much lower. [citation needed] Lebanese and Syrian immigrants started to settle in large numbers in the late 19th and early 20th centuries. The vast majority of the immigrants from Lebanon and Syria were Christians, but smaller numbers of Jews, Muslims, and Druze also settled.