Pieces of rock that strike the surface of a moon or planet

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

What causes the formation of ocean currents?

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate