Freelancing is not just a U.S. phenomenon, but is now spreading around the world. 1  There are approximatly 53 million freelancers in the U.S. contributing $715 billion in earnings to the national economy. 2  80% of all workers in the U.S. surveyed said they would do work on the side if it came to them to earn extra money.
pH value. A number denoting the degree of acidity or of basicity (alkalinity); 7 is a neutral value; acidity increases with decreasing values below 7; basicity increases with increasing values above 7.
pH measures the level of acidity of a liquid-based solution. It also describes the chemical properties of a substance on a scale from 0-14. A pH of 0-5.5 is acidic, with 5.5-7.0 being neutral (like water), and 7.0-14 considered alkaline. Soil pH is an important aspect of lawn care that homeowners should also maintain.