What are the short term effects of an earthquake? What are the long term effects? An example of a long term effect would be structural damage to buildings.

every el niño cycle is different. every year.

the answer to your question is:

c. complementary base-pairing

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.