I use both words in a name when I refer to a bird. Such as 'Northern Cardinal' or 'American Robin.'
no
Yes
It should be capitalized when referring to a Renaissance period of time.
You can/may do ethier. It doesnt really matter.
Yes, you capitalize the word "Constitution," but the word "constitutional" would be lowercase.
Not every red bird can be a cardinal.
A red cardinal is the most cuties a very cute bird.
Yes.
When referring to the fish, it shouldn't be capitalized.
no
First of all, 'CPA' is not a word. If you're referring to 'Certified Public Accountant', then yes, you would capitalize 'CPA'.
Only if you are referring to God.
Yes
red bird
When they are referring to the specific Earth's Moon.
It should be capitalized when referring to a Renaissance period of time.
It should be capitalized if you are referring to a specific metro system.