Two words, no hyphen.
Advocacy and team building requires vision and leadership.
Usually the 1- prefix is dropped from phone numbers where the area code is included; include the 1- only in publications intended for an international audience. For telephone extensions, use ext. or x , followed by a space and the five-digit number.
Do not use parentheses for area codes. Use hyphens. For example, 410-955-6878.
Use that when the clause it introduces is essential to the meaning of the sentence; do not use commas to set off the clause. Use which when the relative clause is not essential to the sentence (i.e., the sentence still makes sense if the clause is removed); use commas to set it off.
Wild geese that are molting are usually unable to fly. [Here, that is used and the clause is not set off with commas because the clause is essential—the sentence would make no sense if the clause were removed.]
Wild geese, which migrate twice a year, fly high. [Here, which is used and the clause is set off with commas because the sentence still makes sense without the clause.]
Pick up the marbles that are blue. [The marbles are of different colors—pick up only the blue ones.]
Pick up the marbles, which are blue. [Pick up all the marbles, which, by the way, all happen to be blue.]
—see Nondiscriminatory Language
a.m. and p.m. should be lowercase, have periods, and be preceded by one space.
11 a.m. (NOT: 11a.m.)
Use a colon to separate the hour from the minutes. The colon and minutes are not necessary for even-hour times.
11 a.m. (NOT: 11:00 or 11:00 a.m.)
BUT: 3:30 p.m., 5:30–8:30 p.m.
from 5:30 to 8:30 p.m. (NOT: from 5:30–8:30 p.m.)
Noon and midnight stand alone. Do not write 12 noon or 12 p.m. or 12 midnight or 12 a.m.
The abbreviations for Eastern Standard Time (ET) and Eastern Daylight Time (EDT) should be in all-caps without periods.
For events, always use the time-day-date sequence.
The committee will meet at 3 p.m., Monday, September 23.
Capitalize a title preceding a name if a person is addressed by that title; otherwise do not capitalize.
Professor John Baldwin
treasurer William Snow Jr.
Do not capitalize titles used alone, following a name, or modified.
The dean said ...
Dr. Brody, president of the university, ...
See: Courtesy titles (Dr., Prof., Ms., etc)
Only use towards in a quotation, as in W. B. Yeats's poem, "Slouching towards Bethlehem." Otherwise, as per the Chicago Manual of Style, use toward.
We spell it travelers' diarrhea.
We will leave "travellers' diarrhoea," and versions thereof, to the British.
Singular = trustee emeritus
Plural = trustees emeritus