Silica is a mineral that can be found in rocks and the Earth's crust. It is a very common substance and is often used in making materials like glass and ceramics. Full definition
They recently revealed that the richness of silica of maize plants is lower at high altitude. (sciencedaily.com)
The PetSafe ScoopFree self - cleaning litter box is frequently compared to the LitterMaid, which employs a similar raking mechanism, but uses clumping clay litter instead of silica gel crystals. (kittycatter.com)
To test this, the team flushed rat hearts with trehalose solution before packing them in silica gel to remove the water from their cells. (newscientist.com)