This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

This oxygen spike would have lasted between ... dynamic behavior of biogeochemical cycles under late Archean conditions.” The study suggests that as continents grew larger during the late ...

The biogeochemical cycles proceed through biological ... and well known are the element cycles of carbon (C), nitrogen (N), oxygen (O), phosphorus (P), and sulfur (S), as well as the water ...

Inland waters, which include streams, rivers, lakes, and reservoirs, are crucial to the health of our planet and different ...

Kiel. When bottom trawls are dragged across the seafloor, they stir up sediments. This not only releases previously stored organic carbon, but also intensifies the oxidation of pyrite, a mineral ...