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

    Widely used pesticides may threaten Earth’s ozone layer

    Data show a major class of long-used “eco-friendly” copper chemicals unexpectedly react with soil, making gases harmful to Earth’s protective ozone layer.

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  2. Ecosystems

    Scientists Say: Decay

    This word can refer to rotting flesh or the transformation of radioactive atoms.

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  3. Environment

    Recycling a climate-warming gas could make ‘greener’ farmed fish

    Instead of warming the climate, methane gas can be collected to help farmers. Along the way, it may also save some fish.

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  4. Microbes

    Scientists Say: Bacteria

    Bacteria get a bad rap for making people sick, but only a tiny portion of these single-celled creatures cause disease.

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  5. Life

    In blazing heat, some plants open leaf pores — and risk death

    When heat waves and droughts collide, water is precious. Some thirsty plants try to cool off by opening tiny pores — only to lose water even faster.

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  6. Ecosystems

    Rewilding returns lost species to strengthen ecosystems

    Restoring the missing species can help undo human-caused problems by aiding forests, slowing climate change and reducing wildfires.

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  7. Earth

    Scientists Say: Savanna

    Savannas exist where there is more rainfall than in a desert, but less than in a forest.

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  8. Ecosystems

    Secret forest fungi partner with plants — and help the climate

    Forest fungi are far more than mere mushrooms. They explore. They move nutrients and messages between plants. They can even help fight climate change.

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  9. Animals

    Meat-eating bees have something in common with vultures

    Flesh-eating bees have acid-producing gut bacteria, much as vultures do. It lets them safely snack on rotting meat.

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