What is the only bone in the body not connected by muscle or ligament

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Any sound above what db can cause hearing loss in human beings

Blank is a rock with a find dark texture that makes up the oceanic crust