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- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/BioGeoChemistry_(LibreTexts)/05%3A_The_Carbon_Cycle_of_Terrestrial_Ecosystems/5.08%3A_The_fate_of_net_primary_production/5.8.02%3A_Quantifying_Food_WebsFrom left to right, top to bottom: (a) Gonatus sp. (squid) feeding on a bathylagid fish (Bathylagidae); (b) Periphylla periphylla, the helmet jellyfish, feeding on a gonatid squid (Gonatidae), with a ...From left to right, top to bottom: (a) Gonatus sp. (squid) feeding on a bathylagid fish (Bathylagidae); (b) Periphylla periphylla, the helmet jellyfish, feeding on a gonatid squid (Gonatidae), with a small narcomedusa (Aegina sp.) also captured; (c) an undescribed physonect siphonophore known as ‘the galaxy siphonophore’ feeding on a lanternfish of the family Myctophidae; (d) a narcomedusa, Solmissus, ingesting a salp chain (Salpida); (e) the ctenophore Thalassocalyce inconstans, with a euphaus…
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/16%3A_Light_and_the_Sun/16.04%3A_Nuclear_FusionThis page discusses the Sun as Earth's main energy source, producing a small fraction of the energy created by stars via nuclear fusion. It explains that hydrogen fuses into helium in stars, releasing...This page discusses the Sun as Earth's main energy source, producing a small fraction of the energy created by stars via nuclear fusion. It explains that hydrogen fuses into helium in stars, releasing energy that opposes gravity. This energy radiates as electromagnetic radiation. Additionally, it mentions how particle accelerators replicate stellar fusion by colliding subatomic particles at high energies, simulating conditions in stars and the early universe.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/12%3A_The_Atmosphere/12.01%3A_The_AtmosphereThis page explains Earth's atmosphere, its essential role in sustaining life by providing necessary gases, moderating temperatures, and protecting against UV radiation. It outlines the structure, incl...This page explains Earth's atmosphere, its essential role in sustaining life by providing necessary gases, moderating temperatures, and protecting against UV radiation. It outlines the structure, including layers such as the troposphere and stratosphere, highlighting the importance of the ozone layer and describing temperature variations.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/15%3A_Stellar_Evolution_and_Our_Sun/15.03%3A_The_SunThis page details the Sun's composition, structure, and significance in the solar system. It primarily consists of hydrogen and helium, with layers including the core, radiative, and convection zones....This page details the Sun's composition, structure, and significance in the solar system. It primarily consists of hydrogen and helium, with layers including the core, radiative, and convection zones. Key phenomena such as solar flares, sunspots, and solar wind are explained, along with the implications of nuclear fusion changes. The Sun's energy is vital for life on Earth, influencing heat, light, and photosynthesis.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/15%3A_Stellar_Evolution_and_Our_Sun/15.01%3A_StarsThis page provides an overview of constellations, the energy flow in stars, and their classification by properties such as color and temperature. It highlights that stars, while seemingly close in the...This page provides an overview of constellations, the energy flow in stars, and their classification by properties such as color and temperature. It highlights that stars, while seemingly close in the sky, are spaced far apart in the universe. The page also introduces parallax for measuring nearby star distances and mentions indirect methods for more distant stars. Key concepts are summarized, along with review questions for evaluation.
- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/BioGeoChemistry_(LibreTexts)/05%3A_The_Carbon_Cycle_of_Terrestrial_Ecosystems/5.08%3A_The_fate_of_net_primary_production/5.8.01%3A_Introduction_to_and_Components_of_Food_WebsIn terrestrial ecosystems it is present as leaf litter and other organic matter that is intermixed with soil, which is denominated "soil organic matter". The detritus of aquatic ecosystems is organic ...In terrestrial ecosystems it is present as leaf litter and other organic matter that is intermixed with soil, which is denominated "soil organic matter". The detritus of aquatic ecosystems is organic material that is suspended in the water and accumulates in depositions on the floor of the body of water; when this floor is a seabed, such a deposition is denominated "marine snow".
