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.

More Stories in HS-LS2-2

  1. Tech

    Meet robots on a mission to help birds

    A new generation of bird-like robots is helping people better understand and protect the wild animals that inspired them.

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  2. Earth

    Analyze This: Tropical forests have gotten patchier

    Although many of the world's forests have gotten less fragmented since 2000, tropical forests have gotten more chopped up, putting animals at risk.

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  3. Health & Medicine

    Doctors found a snake parasite in a woman’s brain — still alive

    This worm typically infects pythons. Though this is its first known infection in humans, other types of worms also can infect the human brain.

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  4. Animals

    Let’s learn about vampire bats

    Vampire bats rarely bite people, instead preferring to feed on animals like cows and horses.

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  5. Oceans

    Summer 2023 is when the ocean first turned ‘hot tub’ hot

    Unfortunately, scientists worry that this atypical sea warming may actually be the beginning of an unwelcome new ‘normal.’

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  6. Ecosystems

    Scientists Say: Predator and Prey

    Ecological relationships between predators and their prey drive the evolution of plants, animals and microbes.

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  7. Tech

    A device spots and counts honeybees hosting a dangerous parasite

    At Regeneron ISEF, three teens debuted an infrared system to detect honeybees carrying mites. It can show beekeepers when a colony needs to be treated.

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  8. Health & Medicine

    Explainer: Why it’s easier to get sick in the winter

    Low humidity helps viruses survive, and cold weather blunts some of the body’s immune responses — making colds and other viral infections more likely.

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  9. Microbes

    Mouth-crawling superbugs cause severe cavities in kids

    In kids with severe tooth decay, fungi and bacteria team up to create superorganisms that can crawl across teeth.

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