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  2. Energy flow (ecology) - Wikipedia

    en.wikipedia.org/wiki/Energy_flow_(ecology)

    In order to more efficiently show the quantity of organisms at each trophic level, these food chains are then organized into trophic pyramids. [1] The arrows in the food chain show that the energy flow is unidirectional, with the head of an arrow indicating the direction of energy flow; energy is lost as heat at each step along the way. [2] [3]

  3. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

  4. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Satisfy the octet rule. Both oxygen atoms currently have 8 electrons assigned to them. The nitrogen atom has only 6 electrons assigned to it. One of the lone pairs on an oxygen atom must form a double bond, but either atom will work equally well. Therefore, there is a resonance structure. Tie up loose ends.

  5. Molecular model - Wikipedia

    en.wikipedia.org/wiki/Molecular_model

    model of liquid water Robert Corey, Linus Pauling, Walter Koltun (CPK coloring) 1951 Space-filling models of alpha-helix, etc. Pauling's "Nature of the Chemical Bond" covered all aspects of molecular structure and influenced many aspects of models Francis Crick and James D. Watson: 1953 spikes, flat templates and connectors with screws model of DNA

  6. NYT ‘Connections’ Hints and Answers Today, Thursday, December 12

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

    If you've been having trouble with any of the connections or words in Thursday's puzzle, you're not alone and these hints should definitely help you out. Plus, I'll reveal the answers further down

  7. Water model - Wikipedia

    en.wikipedia.org/wiki/Water_model

    A water model is defined by its geometry, together with other parameters such as the atomic charges and Lennard-Jones parameters. In computational chemistry, a water model is used to simulate and thermodynamically calculate water clusters, liquid water, and aqueous solutions with explicit solvent.

  8. Siberian Tiger Returns To Chinese Mountain After 30 Years - AOL

    www.aol.com/siberian-tiger-returns-chinese...

    A grainy mobile phone photo of one of the world’s most iconic cats prowling in the snow is offering conservationists hope that an endangered species may be making a comeback.

  9. Cole Hauser Will 'Miss' the 'Unbelievable Cast' of ...

    www.aol.com/lifestyle/cole-hauser-miss...

    "Hopefully, we can continue to get in people's living rooms and entertain them the way we have over the last seven years," he says of the future of the Dutton universe