THE WORD "IT" IN BOLD IN PARAGRAPH 2 REFERS TO .A.THE EARTH...
45.
The word "It" in bold in paragraph 2 refers to .A.
The EarthB.
The mantleC.
The coreD.
The crust45.
The word "It" in bold in paragraph 2 refers to .A.
The EarthB.
The mantleC.
The coreD.
The crust