1 Terracotta tiles are $1-$2.50 a square foot, or $100-$250 for 10x10 feet; European terracotta may cost more.  Natural stone tiles of marble, granite, slate or more start at $2 a square foot, or $200 for 10x10-feet, but costs climb rapidly for custom designs or special orders.
The term probiotic is derived from the Latin preposition âpro,â which means âforâ and the Greek word âbioticâ meaning âbiosâ or âlifeâ. The concept that the gut flora can be modified and harmful microbes replaced with beneficial ones was first introduced in 1907 by a Russian scientist called Elie Metchnikoff.
bacteria. pl n, sing-rium (-rÉªÉm). 1. (Microbiology) a very large group of microorganisms comprising one of the three domains of living organisms.They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animals. See also prokaryote.acteria. pl n, sing-rium (-rÉªÉm). 1. (Microbiology) a very large group of microorganisms comprising one of the three domains of living organisms. They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animals.