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  2. International scale of river difficulty - Wikipedia

    en.wikipedia.org/wiki/International_scale_of...

    Because of the large range of difficulty that exists beyond Class IV, Class V is an open-ended, multiple-level scale designated by class 5.0, 5.1, 5.2, etc. Each of these levels is an order of magnitude more difficult than the last. That is, going from Class 5.0 to Class 5.1 is a similar order of magnitude as increasing from Class IV to Class 5.0.

  3. Chart datum - Wikipedia

    en.wikipedia.org/wiki/Chart_datum

    Lowest astronomical tide (LAT) is defined as the lowest tide level which can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions. [3] Many national charting agencies, including the United Kingdom Hydrographic Office and the Australian Hydrographic Service , [ 4 ] use the LAT to ...

  4. Technology readiness level - Wikipedia

    en.wikipedia.org/wiki/Technology_readiness_level

    Level 2 – Potential Application Validated Level 3 – Proof-of-Concept Demonstrated, Analytically and/or Experimentally Level 4 – Component and/or Breadboard Laboratory Validated Level 5 – Component and/or Breadboard Validated in Simulated or Realspace Environment Level 6 – System Adequacy Validated in Simulated Environment

  5. Directionality (molecular biology) - Wikipedia

    en.wikipedia.org/wiki/Directionality_(molecular...

    The 5′-end (pronounced "five prime end") designates the end of the DNA or RNA strand that has the fifth carbon in the sugar-ring of the deoxyribose or ribose at its terminus. A phosphate group attached to the 5′-end permits ligation of two nucleotides , i.e., the covalent binding of a 5′-phosphate to the 3′-hydroxyl group of another ...

  6. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    For every 3 non-theme words you find, you earn a hint. Hints show the letters of a theme word. If there is already an active hint on the board, a hint will show that word’s letter order.

  7. NYT ‘Connections’ Hints and Answers Today, Saturday, February 15

    www.aol.com/nyt-connections-hints-answers-today...

    3. These musical words are often abbreviated. 4. The words in this category precede a four-letter noun (hint: the noun typically refers to a soft, sweet food that's popular at parties).

  8. Wikipedia:Vital articles/Level/5/Geography/Physical - Wikipedia

    en.wikipedia.org/.../Level/5/Geography/Physical

    Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles.

  9. AOL Mail

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    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!