HS-LS2-4

Use a mathematical representation to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.

More Stories in HS-LS2-4

  1. Ecosystems

    Scientists Say: Food web

    All the species in an ecosystem and the feeding relationships between them get summed up with this handy picture.

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  2. Animals

    This parasite makes wolves more likely to become leaders

    Gray wolves infected with Toxoplasma gondii make riskier decisions. This makes them more likely to become pack leaders or strike out on their own.

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  3. Animals

    Award-winning photo captures ‘zombie’ fungus erupting from a fly

    The winner of the 2022 BMC Ecology and Evolution photo competition captures the cycle of life and death in the Amazon rainforest in Peru.

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  4. Environment

    Ponds made to control floods can spew climate-warming gases, study finds

    Younger stormwater ponds can release more carbon in gases than they absorb, a study finds. That could aggravate global warming.

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  5. Ecosystems

    Scientists Say: Decay

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

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  6. Life

    Explainer: What is an invasive species?

    These foreign organisms hitchhike, spread widely and stir up trouble in native ecosystems.

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  7. Animals

    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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  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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