HS-LS2-2

Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.

  1. Health & Medicine

    Remdesivir is looking even better at fighting COVID-19

    New studies suggest the drug remdesivir not only speeds recovery of COVID-19 patients in the hospital, but lowers their risk of death from the virus.

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  2. Animals

    Pooping ducks can shed the live eggs of fish

    Some carp eggs survived and even hatched after being pooped by a duck. This may help explain how invasive fish reach isolated waterways.

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  3. Animals

    Tube-dwelling sea creatures may be oldest known parasites

    A fossil bed of clam-like animals from a half-billion years ago is covered in tube-dwelling organisms. These suggest the tube dwellers were parasites, scientists now report.

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  4. Animals

    Bumblebees may bite leaves to spur plant blooming

    In a pollen shortage, some bees nick holes in tomato leaves. This can speed up flowering and pollen production by weeks.

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  5. Animals

    Going bright may help corals recover from bleaching

    When some corals bleach, they turn neon colors. Flashy hues may be part of a response that helps these corals recover and reunite with their algae.

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  6. Animals

    Toxic germs on its skin make this newt deadly

    Bacteria living on the skin of some rough-skinned newts make tetrodotoxin. This paralyzing poison is also found in pufferfish.

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  7. Animals

    When prey get scarce, these jellies become cannibals

    Invasive comb jellies may feast on their larvae if massive population booms in summer deplete their prey.

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  8. Animals

    Minecraft’s big bees don’t exist, but giant insects once did

    Big bees buzz in Minecraft. In our world, blocky bees might starve and be stuck on the ground. Yet long ago, giant insects did roam our planet.

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  9. Animals

    How to find the next pandemic virus before it finds us

    Wild animals carry viruses that can sicken people. Monitoring those viral hosts that pose the greatest risk might help prevent a new pandemic.

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  10. Ecosystems

    Check out the communities of bacteria living on your tongue

    Bacteria scraped off the tongue offer a window into how the microbes structure their communities.

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  11. Environment

    Greener than burial? Turning human bodies into worm food

    Composting human bodies yielded good results — and good soil — in one small study. It could become an alternative to burial or cremation in one state.

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  12. Science & Society

    Science isn’t just for scientists

    It doesn’t take an advanced degree or a lab to do science. All you need is curiosity and an interest in learning something new every day.

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