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. 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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  2. Ecosystems

    Scientists Say: Decay

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

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  3. Life

    Explainer: What is an invasive species?

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

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  4. 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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  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. Plants

    Let’s learn about meat-eating plants

    Carnivorous plants use a variety of strategies to lure in and capture their prey, from sticky traps to jawlike leaves.

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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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