Silicon dioxide (SiO2), a basic constituent of volcanic rocks and the most important factor controlling the fluidity of magma. (U. S. Geological Survey, 2009. Glossary. Living with a Volcano in Your Backyard–An Educator's Guide https://pubs.usgs.gov/gip/19/downloads/Appendixes/V_Glossary.pdf)
Meat byproducts are edible tissues and organs, other than meat and animal fat, from slaughtered animals as prepared for wholesale distribution. Examples: liver, kidney, tongue, heart. The entire product may be consumed. (FAO & WHO. 1993. Portion of Commodities to which Maximum Residue Limits Apply and which is Analyzed. CAC/GL 41-1993)
