No, unless you are refering to a specific treaty, (ex. Treaty of Versailles)
Yes, the word "Treaty" should be capitalized when referring to a specific treaty as a proper noun (e.g., the Treaty of Versailles).
No, the word "revivalist" does not need to be capitalized unless it is at the beginning of a sentence or part of a proper noun.
No, the word "seismograph" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
No, the word "motorcycles" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
No, the word "region" does not need to be capitalized in a sentence unless it is the first word of the sentence or part of a proper noun (e.g. "Pacific Northwest region").
Yes, the word "Treaty" should be capitalized when referring to a specific treaty as a proper noun (e.g., the Treaty of Versailles).
No, coral does not need to be capitalized.
The word evolution does not need to be capitalized.
No, the word "revivalist" does not need to be capitalized unless it is at the beginning of a sentence or part of a proper noun.
No, the word "seismograph" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
No it does not need to be.
No, the word "motorcycles" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
No, the word "region" does not need to be capitalized in a sentence unless it is the first word of the sentence or part of a proper noun (e.g. "Pacific Northwest region").
No, the word "present" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
The word citizen does not need to be capitalized.
No.
Yes, "Cheerios" is a brand name and should be capitalized.