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.
Prebiotics is a general term to refer to chemicals that induce the growth or activity of microorganisms (e.g., bacteria and fungi) that contribute to the well-being of their host.The most common example is in the gastrointestinal tract, where prebiotics can alter the composition of organisms in the gut microbiome.n diet, prebiotics are typically non-digestible fiber compounds that pass undigested through the upper part of the gastrointestinal tract and stimulate the growth or activity of advantageous bacteria that colonize the large bowel by acting as substrate for them.