1. los vecinos frente a mi casa son muy simpáticos.2. rosa y pepe viajan mucho, expone a muchas culturas. 3. las amigas con en la universidad son de varias ciudades. 4. el apartamento y jorge alquilaron está cerca del centro.5. adrián y daniel, física, son expertos en computación. 6. rubén debe pedirle la aspiradora a marcos, a regalaron una.

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.