MS-LS2-3

Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.

More Stories in MS-LS2-3

  1. Environment

    What you can do to improve soils

    Soils are the life-sustaining structures under our feet. Here are some tips for keeping soils healthy. First rule of thumb: Give more than you take.

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  2. Animals

    Choked by bacteria, some starfish are turning to goo

    For years, researchers thought gooey, dying starfish were infected. Instead, these sea stars are suffocating. And bacteria may be behind it all.

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  3. Agriculture

    Dew collector brings water to thirsty plants

    This invention grabs water from the air at night. All it needs is the sun’s warmth the next day to release that moisture to growing plants.

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  4. Plants

    How to grow your own science experiment

    Does fertilizer help plants grow better? You might expect it to, but how can you know? This experiment will help you test it yourself.

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  5. Environment

    Jumping ‘snake worms’ are invading U.S. forests

    These bad-news invaders are spreading across the United States. As they turn forest debris into bare ground, soils and ecosystems are changing.

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  6. Plants

    The faster trees grow, the younger they die

    As climate change spurs forest tree growth, it also shortens trees’ lives. That results in a quicker release of climate-warming carbon back into the atmosphere.

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  7. Animals

    Whales get a second life as deep-sea buffets

    When a whale dies and sinks to the seafloor, it becomes a feast for hundreds of different types of creatures.

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  8. Animals

    One tiny sea parasite survives 200 times atmospheric pressure

    Known as the seal louse, this tiny insect can survive deep oceanic dives on its mobile home, a marine mammal.

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  9. A dirty and growing problem: Too few toilets

    As the famous book says, everybody poops. That’s 7.8 billion people, worldwide. For the 2.4 billion with no toilet, the process can be complicated.

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