Respuesta :
UV rays and X-rays are electromagnetic waves (do not require material medium for transmission). They are part of the electromagnetic spectrum and travel with the speed of light (3×10^8 m/s). In this case i believe the answer is C, X-rays have a higher frequency compared to UV rays.
The total amount of energy before and after a chemical reaction is the same. Thus, energy is A. conserved. B. created. C. destroyed. D. the same as mass.