Science help pease please? Earth science?

1.
Which of the following is NOT part of the compositional structure of Earth?
A.

Global ocean

B.

Crust

C.

Mantle

D.

Core


2.
Earth was formed approximately 4.6 billion years ago.
A.
True
B.
False


3.
Approximately 60 percent of the Earth's surface is covered with the global oceans.
A.
True
B.
False

I'd assist you in this case, mate. ;)

(1): It's A.
(2): It's A; as long as I remember, even the ancients lived a 1.5 billion year ago, so most surely, it will be 4.6 atleast when we had dinosaur on earth.
(3) It's A.