Which of the following describes the strength of a covalent bond

Which two particles are found in the center of an atom

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

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