Ecosystems
Scientists Say: Decay
This word can refer to rotting flesh or the transformation of radioactive atoms.
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
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AnimalsA 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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FossilsSudden 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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EnvironmentWhat 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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PlantsThe faster trees grow, the younger they die
As climate change spurs forest tree growth, it also shortens trees’ lives. That results in a quicker release of climate-warming carbon back into the atmosphere.
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AnimalsMinecraft’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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EcosystemsNewfound 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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PlantsScientists look to hack photosynthesis for a ‘greener’ planet
Photosynthesis turns sunlight into energy for plants. Scientists want to know more about it, imitate it — even improve it.
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PlantsExplainer: The fertilizing power of N and P
Two elements — nitrogen and phosphorus — help plants grow. When the soil doesn’t have them, farmers might add them in the form of fertilizer.
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AnimalsBee hotels are open for business
Bee hotels are creating a buzz in conservation and research by offering nesting places for wild bees.