Silica cycleCycling of silica during the marine environment. Silicon usually occurs in character as silicon dioxide (SiO2), also called silica. It cycles through the marine environment, coming into largely via riverine runoff. Silica is faraway from the ocean by organisms including diatoms and radiolarians that use an amorphous form of https://expressafrica.net/post/403255_carburo-de-boro-boron-carbide-b-c-spanish-term-for-boron-carbide-valued-for-its.html