Primary succession always begins with bare rock as the foundation and relies on a pioneer species to start the ecosystem community. Which of the following is an example of a pioneer species?
A) Lichen
B) Trees
C) Grass
D) Bear

the correct answer is b

the planets have a circular orbit around the sun.

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.