Yes, "Penguin" should be capitalized when referring to the animal or the book publishing company.
No, homework does not need a capital letter unless it is the first word of a sentence.
Colors do not need a capital letter unless it is part of a Title. e.g. The Red Badge of Courage (a book)
No, "thrush" does not need a capital letter unless it is at the beginning of a sentence or part of a proper noun.
A county does not need a capital letter. A county needs funds and laws and staff to run it.The word county by itself does not require capitalization. The name of a county is a proper noun and spelling the name of a county should begin with a capital letter. When the word county is part of the name of a county, it should also be capitalized as in Kings County.
Yes it does; the Earth is the name of our planet.
No. "You" does not need a capital letter unless it starts a sentence.
No, homework does not need a capital letter unless it is the first word of a sentence.
Colors do not need a capital letter unless it is part of a Title. e.g. The Red Badge of Courage (a book)
Yes. Because 3D is short for "three dimensional," it does need a capital letter.
No, "thrush" does not need a capital letter unless it is at the beginning of a sentence or part of a proper noun.
Yes, when referring to the Sun as the star at the center of our solar system, it should be capitalized.
No, mathematics does not need to be capitalized. As far as I'm aware, the only studies that need to be capitalized are languages.
no
No
not really
NO
The word "ocean" does not typically need a capital letter when used generically to refer to any ocean. However, it should be capitalized when it is part of a proper noun, such as "the Atlantic Ocean" or "the Pacific Ocean." In these cases, it specifies a particular ocean.