Answer:
lithosphere
The geosphere is considered to comprise the entire earth solid atmosphere. The earth is also into two parts the interior and the exterior core, the mantle and the crust.
The answer is b. a common currency
hope this helps ! :D
Answer: noun
Explanation:the study of the physical features of the surface of the earth and their relation to its geological structures
Because Earth's outer core is liquid and S waves cannot travel trough liquids
