Today, the ratio of carbon to nitrogen and phosphorus in marine organic matter is relatively constant. But this ratio probably varied during the Earth's history as a consequence of changes in the phytoplankton community and ocean oxygen levels.
Planavsky, N.J. 2014. The elements of marine life. Nature Geoscience, 7: 855-856.Planavsky, N. J. (2014). The elements of marine life. Nature Geoscience, 7, 855-856.Planavsky, N. J. The elements of marine life. Nat. Geosci. 7, 855-856 (2014)....
The elements of marine life 喜欢 0 阅读量: 88 作者:Planavsky,J Noah 摘要: Today, the ratio of carbon to nitrogen and phosphorus in marine organic matter is relatively constant. But this ratio probably varied during the Earth's history as a consequence of changes in the phytoplankton community...
(2009) includes the study of non-genetic elements in his definition: "the genome-wide study of the function of DNA (including genes and non-genetic elements), as well as the nucleic acid and protein products encoded by DNA". Functional genomics involves studies of natural variation in genes,...
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The salt in sea water is different from table salt, though. Our table salt is made up of the elements sodium and chlorine, but the salt in sea water contains more than 100 elements, including magnesium, potassium, and calcium. Water temperatures in the ocean can vary greatly, from about ...
The State Council Information Office of the People’s Republic of China October 2021 目录 Contents 前言 Preface 一、秉持人与自然和谐共生理念 I. Harmony Between Humanity and Nature 二、提高生物多样性保护成效 II. Increasing the Ef...
Nutrient supplyis essential for life, especially key compounds—organic carbon, ammonium, ferrous iron and phosphate—containing C, N, Fe, and P bioactive elements respectively44. Phosphorus is essential because it is a globally limiting nutrient and plays a unique role in marine biogeochemistry, eco...
Qualification of well barrier elements - long-term integrity test, test medium and temperatures Presented at the SPE European Health, Safety and Environmental Conference in Oil and Gas Exploration and Production, Vienna, Austria (2011), pp. 22-24, 10.2118/138465-MS February. SPE-138465-MS Google...
more than 1.3 millioncubic metresof seawater have beensprayedonto the damaged cores to keep them from overheating, contaminating the water with 64 radioactive elements, known asradionuclides. Of greatest concern are those that couldposea threat to human health: carbon-14, iodine-131, caesium-137,...