Typical costs: Having a contractor level and prepare the area then pour a concrete slab ranges from $1,000-$2,000 for a 10x20-feet; $4,000-$6,000 for 80x20-feet; and $5,000-$10,000 for 100x100-feet. Smaller projects cost more per square yard because of minimum travel, labor and equipment costs.
What makes yogurt - well, yogurt? The words live and active cultures refer to the living organisms, Lactobacillus bulgaricus and Streptococcus thermophilus, which convert pasteurized milk to yogurt during fermentation. Note that the milk is pasteurized before culturing to remove any harmful bacteria.
If you have lactose intolerance, you might find yogurt with live cultures easier to digest, since the bacteria produce lactase, the enzyme that breaks down lactose. Kefir and buttermilk are other dairy foods containing active cultures of lactic acid bacteria.actic acid bacteria ferment foods, which lowers the pH level and prevents harmful bacterial growth. In some cases, such as certain types of yogurt, fermented foods contain live bacteria cultures that might have beneficial intestinal effects.