DNA is really spread out and messy. The cell organizes DNA into to make sure that each daughter cell gets the information it needs.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

the cover letter for a job search includes the skills one has for the particular job. including a cover letter is always a good idea, as it describes the ability to perform a task, and the employer can easily fetch the intention of the job you want to do.  

the cover letter is very important to be included in the job search document. hence, i strongly with the statement.