Talk:Biogenic silica

Terrestrial biogenic silica
Why is the article almost entirely about marine silica? The silica content of land plants used for feeding livestock is of some significance to agriculture, for example. 99.118.9.187 (talk) 17:27, 11 October 2013 (UTC)

metal??
"Silica is an amorphous metal oxide", say what? — Preceding unsigned comment added by 87.71.145.8 (talk) 18:15, 26 March 2018 (UTC)