Which of the following Is related with the southern oscillation?

A. the constitution goes into effect. b. samuel adams agree to support ratification of a bill of rights is added. c. virginia and new york refuses to hold conversations ratify the constitution. d. states begin holding conversations to debate ratifying the constitution.

You are the on-duty desk sergeant at the local police station. a man walks in and says, "i killed someone and want to confess." you grab your digital voice recorder and direct the man to a chair. he sits down and tells the tale of what turns out to be a first-degree murder. you record every word, including the numerous instances in which you said, "uh- huh" and "i see." satisfied that the subject did, indeed, commit a murder, you place him under arrest. the confession is:

What does the delta symbol represents in this equation