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.
The Moho is found at about 8 kilometers (5 miles) beneath the ocean and about 32 kilometers (20 miles) beneath continents. Different types of rocks distinguish lithospheric crust and mantle. Lithospheric crust is characterized by gneiss (continental crust) and gabbro (oceanic crust).