HS-LS1-2

Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.

More Stories in HS-LS1-2

  1. These lemurs take nose-picking to a new level

    A nose-picking aye-aye’s spindly middle digit probably pokes all the way into the back of the throat, CT scans show.

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  2. Health & Medicine

    Scientists Say: Kidney

    The kidneys remove waste and excess water from the blood, forming urine.

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  3. Health & Medicine

    New brain scans may show if a concussion has not yet healed

    Concussions change certain brain waves, and delta waves may be the best signs of when teens can return to competitive sports.

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  4. Materials Science

    Analyze This: Algae behind blue-glowing waves light up a new device

    Some algae glow blue when they experience forces. Held in transparent plastic, they now make devices light up in response to gentle pushes and tugs.

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  5. Animals

    Scientists Say: Metamorphosis

    Animals that go through metamorphosis look very different as adults than they did as kids.

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  6. Environment

    Microplastic pollution aids viruses and prolongs their infectivity

    The tiny plastic bits give these germs safe havens. That protection seems to increase as the plastic ages and breaks into ever smaller pieces.

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  7. Animals

    Some young fruit flies’ eyeballs literally pop out of their heads

    The first published photo shoot of developing Pelmatops flies shows how their eyes rise on gangly stalks in the first hour of adulthood.

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  8. Animals

    Splatoon characters’ ink ammo was inspired by real octopuses and squid

    In Nintendo’s Splatoon game series, Inklings and Octolings duke it out with weapons that fire ink. How does this ink compare with that of real octopuses and squid?

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  9. Environment

    Bacterial ‘living wires’ could help protect the seas and climate

    Long, thin bacteria that conduct electricity may be able to help clean up oil spills and reduce emissions of methane, a powerful greenhouse gas.

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