HS-LS2-5

Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere.

More Stories in HS-LS2-5

  1. Chemistry

    Scientists Say: Rubisco

    Rubisco is a key protein in the process of photosynthesis, which feeds plants — and, in turn, us.

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  2. Plants

    No sun? No prob! A new process might soon grow plants in the dark

    Teamwork makes green-work! Collaborating scientists came up with an electrifying farming trick that could make sunlight optional.

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  3. 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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  4. Ecosystems

    Scientists Say: Decay

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

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  5. Environment

    Recycling a climate-warming gas could make ‘greener’ farmed fish

    Instead of warming the climate, methane gas can be collected to help farmers. Along the way, it may also save some fish.

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  6. 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.

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  7. Animals

    A bubble of air lets some lizards breathe underwater

    Anolis lizards leap into streams to escape danger. Now researchers have figured out how they can stay underwater for up to a quarter of an hour.

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  8. Fossils

    Sudden shark die-off 19 million years ago eliminated most species

    New fossil evidence shows 90 percent of sharks died in the mysterious event.

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  9. Environment

    What you can do to improve soils

    Soils are the life-sustaining structures under our feet. Here are some tips for keeping soils healthy. First rule of thumb: Give more than you take.

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