<span>The statement is true of the undisturbed rock layers shown is</span><span> Limestone is the youngest</span>
Most of the rocks exposed at the surface of Earth area unit sedimentary--formed from particles of older rocks that are broken apart by water or wind. The gravel, sand, and dust settle to an all-time low in rivers, lakes, and oceans. These matter particles could bury living and dead animals and plants on the lake or Davy Jones's locker.
The optical spectrometer is an instrument used to analyze the properties of light over a specific period of time, over a specific part of EMS.
The independent variables usually the wavelength of light. A spectrograph is usually a multi-channel detector of light.
A continuous spectrum usually measures the values of the condition of some physical quantities. Such as energy or wavelengths, a continuous system often may be considered as a discrete spectrum.