C) Water and pepper. Hope this helps
The waves can be described by their wavelength or frequency and their amplitude (the strength<span> or </span>intensity<span> of the wave). Wavelength is the length of one complete wave cycle. For radiation in the UV region of the spectrum, </span>wavelengths<span> are measured in </span>nanometers<span> (nm), where 1nm = one millionth of a millimeter. </span>
The troposphere is the layer closest to Earth’s surface
Nucleus, that is the answer
