♥ Estimated 50,000
♥ Till to this day no one knows the EXACT amount. <span />
B.<span>lead to health problems!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</span>
Answer: (1) visible light, with wavelengths between 0.4 and 0.8 micrometre, (2) ultraviolet light, with wavelengths shorter than 0.4 micrometre, and (3) infrared radiation, with wavelengths longer than 0.8 micrometre.
Explanation: <em>hope that helps :p</em>
