No, except at the beginning of a sentence because it is
n
ot a proper
n
ou
n.
Yes, "Black community" should be capitalized as it is referencing a specific racial or ethnic group.
No, it doesn't need to be capitalized.
No, there is no need for 'substitute teacher' to be capitalized.
It should look like this: Siamese Cat. It does need to be capitalized.
Accounts Payable should be capitalized if using the phrase as a proper noun. If not then it does not need to be capitalized.
Yes it should.
The word citizen does not need to be capitalized.
It should only be capitalized when it refers to a title.
No, CRNA does not always need to be capitalized. It should be capitalized when using it as an acronym for Certified Registered Nurse Anesthetist.
Yes, "astronaut" should be capitalized when referring to a person who is trained to travel in a spacecraft.
Yes, "Cheerios" is a brand name and should be capitalized.
Only if it is the first word in a sentence.