Unless it is the first word in a sentence, then you don't need to capitalize "tobacco."
No, not if you are using the word trout alone.
You only need to capitalize the word "billion" if it is the first word of the sentence...or if it is actually someone's name, or any other proper noun.
do you capitalize the word protestant
Yes.
Unless "it's" is the first word, there is no need to capitalize.
No.
Yes, the word "volcano" is not typically capitalized unless it is part of a specific name, like "Mount Vesuvius Volcano." In general usage, it is lowercase.
No, you never need to capitalize alligator unless it is the first word of the sentence.
Unless it is the first word in a sentence, then you don't need to capitalize "tobacco."
Nope no need to
No because it isnot a propernoun.
No there's no need for capitalization.
No, "assault" is typically not capitalized in a sentence unless it is at the beginning of the sentence or part of a title. It is considered a common noun.
No, not if you are using the word trout alone.
No, "nicotine" should not be capitalized unless it is at the beginning of a sentence or part of a proper noun.
No, there is no need to capitalize the word bachelor's degree.