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. 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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  2. 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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  3. 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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  4. 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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  5. 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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  6. 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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  7. Animals

    Baleen whales eat — and poop — a lot more than we thought

    The amount of food that some whales eat and then poop out suggests these animals have a powerful influence over ocean ecosystems.

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  8. Oceans

    Scientists Say: Atoll

    Atolls form when coral reefs build up around underwater volcanoes.

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  9. Plants

    Well-known wildflower turns out to be a secret meat-eater

    Look closely at Triantha occidentalis, and you’ll see gluey hairs — and a trail of insect corpses on its stem.

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