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  2. TV Parental Guidelines - Wikipedia

    en.wikipedia.org/wiki/TV_Parental_Guidelines

    Under this revised system, television programming would continue to fall into one of the six ratings categories (TV-Y, TV-Y7, TV-G, TV-PG, TV-14 or TV-MA), but content descriptors would be added to the ratings where appropriate, based on the type(s) of objectionable content included in the individual program or episode: D (suggestive dialogue ...

  3. Category : Children's television networks in the United States

    en.wikipedia.org/wiki/Category:Children's...

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  4. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    pH can be measured using indicators, which change color depending on the pH of the solution they are in. By comparing the color of a test solution to a standard color chart, the pH can be estimated to the nearest whole number. For more precise measurements, the color can be measured using a colorimeter or spectrophotometer.

  5. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    In and of themselves, pH indicators are usually weak acids or weak bases. The general reaction scheme of acidic pH indicators in aqueous solutions can be formulated as: HInd (aq) + H 2 O (l) ⇌ H 3 O + (aq) + Ind − (aq) where, "HInd" is the acidic form and "Ind −" is the conjugate base of the indicator. Vice versa for basic pH indicators ...

  6. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. YouTube Kids - Wikipedia

    en.wikipedia.org/wiki/YouTube_Kids

    YouTube Kids has faced criticism from advocacy groups, particularly the Fairplay Organization, for concerns surrounding the app's use of commercial advertising, as well as algorithmic suggestions of videos that may be inappropriate for the app's target audience, as the app has been associated with a controversy surrounding disturbing or violent ...

  8. Category:Preschool education television networks - Wikipedia

    en.wikipedia.org/wiki/Category:Preschool...

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  9. Universal indicator - Wikipedia

    en.wikipedia.org/wiki/Universal_indicator

    A universal indicator is a pH indicator made of a solution of several compounds that exhibit various smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. A universal indicator can be in paper form or present in a form of a solution. [1]