They compared prices at Whole Foods stores in half a dozen cities to those at various competing supermarkets to determine which stores were cheaper. They found that Whole Foods is about 15% more expensive than other conventional supermarkets, such as Kroger, Wegmans, and Safeway.
A type of igneous rock. Basalt is the most common rock type in the earth's crust and makes up most of the ocean floor.
Basalt is the most abundant igneous rock in the Earths crust. Most of the ocean floor is underlain by basalt. It is a volcanic igneous rock, and is typically dark in color because it contains large amounts of iron (Fe) and magnesium (Mg) compared to other igneous rocks.