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. Health & Medicine

    What ‘community’ spread of coronavirus means

    Health experts warn there are probably many undetected cases already in the United States, raising chances the disease will soon be widespread.

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  2. Health & Medicine

    Search speeds up for vaccine against the new coronavirus

    Scientists are investigating unusual ways to make drugs to prevent viral infections. One may even be able to treat already sick people.

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  3. Animals

    Analyze This: Shimmering colors may help beetles hide

    Delve into data showing how brilliant colors that shift as a viewer — or predator — moves may help iridescent insects blend in.

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  4. Health & Medicine

    Explainer: What are allergies?

    Sometimes the body’s immune system works too well, like a smoke alarm that blares every time you cook pizza. The results can range from uncomfortable to potentially life-threatening.

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  5. Animals

    Drones might one day capture a dolphin’s breath in midair

    High-speed footage of dolphin spray reveals that droplets blast upward at speeds close to 100 kilometers per hour.

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  6. Health & Medicine

    The many challenges of corralling a coronavirus outbreak

    The Chinese government has quarantined millions of people in hopes of limiting spread of a new coronavirus. But no one yet knows how much this will help.

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  7. Ecosystems

    Newfound desert soil community lives on sips of fog

    Lichens and other fungi and algae team up to form a 'grit-crust' on the parched soil of Chile’s Atacama Desert. Those species slake their thirst with moisture from coastal fog.

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