Agence France-Presse: Nutrients carried by the Amazon River help create a carbon sink deep in the Atlantic Ocean, a study released Monday has found. The key ingredients transported by the river are iron and phosphorus. These elements are all that an organism called a diazotroph needs to capture nitrogen and carbon from the air and transform them into organic solids that then sink to the ocean floor. Researchers from the United States, Greece and England found that the Amazon carries these …