Words similar to necessity

Example sentences for: necessity

How can you use “necessity” in a sentence? Here are some example sentences to help you improve your vocabulary:

The "jump" of front-page news stories is a necessity borne of spatial limitation, which the Web theoretically does not have.
Although this method has been quite successful thus far, its practicality is limited by the necessity for a considerable amount of RNA as raw material for cloning, and cloned products are often dominated by a few highly expressed miRNAs.
For all practical purposes, sequence verification of array elements is an ongoing necessity.
And being under the compulsion of no timetable, it does not get panicky under the necessity for such retreat.
It is, I imagine, equally difficult to pursue such a career without ever becoming aware of the arithmetical necessity that countries attracting big inflows of capital must run trade deficits.