While in a lesser dose than coffee, green tea still does contain substantial levels of caffeine. (detoxdiy.com)
Such substantial levels of oxygen could only have been produced by organisms converting light energy and carbon dioxide to O2 and water. (sciencedaily.com)
As analysts expect e-commerce sales in the U.S. to continue growing by 10 to 12 percent a year, total e-commerce sales are already at substantial levels as traditional brick - and - mortar retailers have expanded their online efforts. (wwd.com)