This isn't a proper question, so it is not answerable. Using a complete sentence would help; you cannot make a question simply by adding a question mark to the end.
Carbon 14 is what a living thing gives off. It helps archaeologists tell how long ago something died (the less carbon 14, the longer ago it died).<><><>Carbon-14 is a specific...
The electromagnetic spectrum is the name for the range of electromagnetic waves when they are placed in order of increasing frequency. The electromagnetic spectrum is made up of radio waves, infrared...
Continuous spectra : Itis produced to the de-acceleration of high velocity electros when they are deflected while passing near the +vely charged nucleus of an atom of the target material. Line...