Several different processes of varying effectiveness can be used to purify air. 1  Thermodynamic sterilization (TSS) - This technology uses heat sterilization via a ceramic core with micro capillaries, which are heated to 200 Â°C (392 Â°F).
What is Common Core? The Common Core State Standards Initiative is a state-led effort that established a single set of educational standards for kindergarten through 12th grade in English language arts and mathematics.
Among the territories of the United States (not listed in the chart below), the U.S. Virgin Islands, Guam, the Northern Mariana Islands, and the American Samoa Islands have adopted the standards while Puerto Rico has not adopted the standards. As of May 12, 2015, three states have repealed Common Core.