The structural layer that comprises the greatest volume of Earth ...

[tiffannnnyyyyyy]

The structural layer that comprises the greatest volume of Earth is the ___________________ _. Fill in the blank(s) with the appropriate word(s).

Question 2

If you could drill from the outer surface of Earth all the way to the center, you would pass through the
  major divisions of Earth: the ___________________ _, the ___________________ _, and finally the
  ___________________ _. Fill in the blank(s) with the appropriate word(s).

[s.meritte]

Answer to Question 1

mantle

Answer to Question 2

crust, mantle, core

[tiffannnnyyyyyy]

Great answer, keep it coming

[CAPTAINAMERICA]

Thanks for the timely response, appreciate it