Silica cycleCycling of silica in the marine environment. Silicon normally takes place in nature as silicon dioxide (SiO2), also known as silica. It cycles through the marine environment, entering mainly by way of riverine runoff. Silica is faraway from the ocean by organisms for instance diatoms and radiolarians that use https://expressafrica.net/post/404383_calcium-nitride-chemical-formula-ca-n-a-key-notation-in-materials-science-for-th.html