If you're referring to "The" emergency room rather than "An" emergency room, you can consider it a proper noun and capitalize it. In general it is not capitalized.
No, not unless you use ER which is short for emergency room.
No, because it isnot a propernoun.
No, you do not capitalize "first birthday" in a sentence.
You only capitalize 'deceased' if it is at the start of a sentence.
You should not capitalize a sentence fragment following a colon.
No, not unless you use ER which is short for emergency room.
Ummm.... No it depends on how you use it in a sentence.
No, because it isnot a propernoun.
The emergency room is in the annex of the main building
You do not capitalize chickenpox in a sentence. The exception is if the word is the first in the sentence.
No, you do not capitalize "first birthday" in a sentence.
You only capitalize 'deceased' if it is at the start of a sentence.
Yes, "nuns" should be capitalized in a sentence as it is a proper noun referring to a specific group of people who belong to a religious order.
Yes. When referring to a specific location (rather than simply the term), you may capitalize the term, e.g. "When admitted to Washington Hospital, he was moved to Intensive Care." The same applies to Emergency Room as a department. "We rushed him to the emergency room." "Charity Hospital has recently remodeled the Emergency Room."
No, you do not capitalize marine biologist in a sentence. (Unless marine is in the beginning of the sentence)
It depends on where you put it in a sentence. Of coarse in the beginning of a sentence you capitalize space but by it's self no you don't capitalize.
Yes, you always capitalize a day of the week.