Discussion
The volume of the earth consists of the following :
(a) 1% Crust
(b) 84% Mantle
(c) 15% Core
Choose the correct option from the following :
Answer: D
All (a), (b) and (c) are correct.
The standard textbook figures for the earth's volume are: crust about 1%, mantle about 84% and core about 15%. The crust is very thin compared with the whole planet, the mantle makes up most of the earth's volume, and the core is the rest.
The three figures add up to 100%, so no part of the statement set can be dropped, ruling out the options that accept only two of them.
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