Density can be used in a sentence showing its scientific meaning by defining the term. In definition, you are giving the scientific meaning of the word density and at the same time you are constructing a sentence. For example :
Density is the mass per volume of the material. Basically, it refers to the measurement of how crammed together is the matter. The formula to calculate density is rho = m/v wherein rho is the density, m stands for the mass and v stands for the volume.
Because the status of National Park comes with federal protection and funding to go towards conservation. Even if there aren't that many visitors, tourism still creates revenue to go towards maintaining America's wild lands.
<span>It conveys King's belief that the goals of the Civil Rights Movement are pure and just in the same way that America's founding ideals are pure and just. </span>