No they don't.
Depression is capitalized in phrases such as The Great Depression, but the medical condition and the scientific are not.
No, just capitalized.
No, coral does not need to be capitalized.
The word evolution does not need to be capitalized.
No, it shouldn't be capitalized.
No, it doesn't need to be capitalized.
No, circa does not need to be capitalized.
no im pretty sure thats books, but the important words are still capitalized
It should be capitalized if it follows or precedes a name.
No, kinetic energy doesn't need to be capitalized.
Not only does the A in AIDS need to be capitalized, the entire acronym needs to be capitalized--since it is an acronym, and not the actual name for the disease.
it does not need to be capitilized.