In a short essay (100-150 words), describe darwin's view of how natural selection resulted in
both unity and diversity of life on earth. include in your discussion some of his evidence. (see
tips for writing good essays and a suggested granding rubic in the study area of
mastering biology under "writing tips and rubic".)

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

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.