- Kennedy Creek Natural Area Preserve (dnr.wa.gov)
This combined natural area preserve (NAP) and natural resources conservation area (NRCA) protects 1,121 acres, including most of the creek and estuary on the Puget Sound. Kennedy Creek Natural Area Preserve (NAP) includes the tidal reaches of Kennedy Creek and Schneider Creek, as well as adjacent salt marsh, tide flats, uplands and riparian forests. The salt marsh protected at the preserve is among the highest quality in the Puget Trough Ecoregion.
- Silicon dioxide (Wikipedia)
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a synthetic product. Examples include fused quartz, fumed silica, opal, and aerogels. It is used in structural materials, microelectronics, and as components in the food and pharmaceutical industries. All forms are white or colorless, although impure samples can be colored.