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. Health & Medicine

    Science-fair finding allows girl to sample a croissant

    Some supplements claim they can help people with celiac disease, who cannot digest gluten. But do the pills work? One teen used science to find out.

  2. Tech

    This power source is shockingly eel-like

    The electric eel’s powerful electric charge inspired this new squishy, water-based new approach to generating power.

  3. Health & Medicine

    Obesity makes taste buds disappear — in mice, anyway

    Mice that gained excessive weight on a high-fat diet also lost one in four taste buds.

  4. Health & Medicine

    Explainer: What is a concussion?

    A concussion is a severe type of head injury that can damage a brain for weeks to years — perhaps even a lifetime.

  5. Animals

    Beware the tap of the narwhal’s tusk

    A new video shows narwhals using their tusks to tap fish before eating them. They might be stunning their prey — or just playing with their food.

  6. Animals

    How a flamingo balances on one leg

    Flamingos are so good at balancing on just one leg that they can snooze that way with little effort.

  7. Environment

    Tiny air pollutants inflame airways and harm heart

    New studies show how tiny bits of air pollution, called particulate matter, can lead to health problems ranging from chronic runny noses to heart disease.