No, they are part of a word that you could find in a dictionary and if you do italianbread it's not capitalized so putting a space apart really doesn't do anything since it could be considered part of that word.
Yes, Italian is always capitalized.
In general, no, "transition process" should not be capitalized in a sentence.
Yes, "PC" should be capitalized in a sentence.
No, the word forecast should not be capitalized in a sentence.
Yes it should be capitalized.
No, the word "fifteen" should not be capitalized in a date within a sentence unless it is the first word of the sentence.
No, "secondary students" should not be capitalized in the middle of a sentence unless it is a proper noun or at the beginning of a sentence.
Mammogram should not be capitalized unless it's the first word in the sentence.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
No, "methamphetamine" should not be capitalized unless it is at the beginning of a sentence.
Since 'felon' is a common noun, it is only capitalized if it is at the start of a sentence.
No it shouldn't be capitalized.