Why would one peak be observed when there are actually two dyes present?

Gettysburg address question. what is the best line from the address? why do you think so?

What was the name given to the members of parliament during the english civil war? a. parliamentarians c. the roundheads b. the presbyterians d. the puritans select the best answer from the choices provided a b c d

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases. protect researchers from disclosing conflicts of interest. prevent subjects from knowing the purpose of a study. protect identifiable research information from compelled disclosure.