Density refers to a physical property that is measured using a ratio of divided by so that two objects of the same size can still have very different density.

Density is a physical value that compares the amount of matter that a body has with its volume. Such density determines the relation of these two values, for example, the body with a lot of matter in a given volume has a high density. The density formula is given as mass divided  by volume, and is usually expressed in grams per cubic centimeter. It should be emphasized that the density is expressed as the number of particles per unit volume, not the density of the particle itself.

the answer is mary made mudpies on monday.

remember alliteration is the occurrence of the same letter or sound at the beginning of adjacent or closely connected words.  

the rocket launch by showing how the population around it changes its behavior as the earth's influence over the martian planet when he uses the term "green star".

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