HS-LS2-6

Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.

More Stories in HS-LS2-6

  1. Health & Medicine

    Dogs and other animals could aid the spread of monkeypox

    Now that monkeypox has spread to a dog, researchers fear other species could help the virus become widespread outside of Africa for the first time.

    By
  2. Health & Medicine

    Explainer: What is mpox (formerly monkeypox)?

    Once rare, the viral disease monkeypox exploded onto the global scene for the first time in 2022.

    By and
  3. Animals

    Some Greenland polar bears are surviving with very little sea ice

    The ‘glacial mélange’ on which they’ve come to rely — a mix of ice, snow and slush — could be a temporary refuge for some polar bears.

    By
  4. Life

    Explainer: What is an endangered species?

    Threats such as climate change and habitat loss can put species at risk of going extinct. Different words describe that risk.

    By
  5. 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.

    By
  6. Life

    Explainer: What is an invasive species?

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

    By
  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.

    By
  8. Environment

    Cheatgrass thrives on the well-lit urban night scene

    Middle-grade campers team up with ecologists at Denver University to show that streetlights boost the growth of a reviled invasive species.

    By
  9. Life

    Some pikas survive winter by eating yak poop

    Pikas endure bone-chilling cold on the Tibetan Plateau by using little energy and fueling up on yak poop.

    By