I dont under stand please exsplain more
The Correct choice is : C. <u>Solids</u>
Sound waves need a medium to propagate, and the most suitable medium for that is solids, where it travel the fastest or with greatest efficiency.
Crust:outer silicate solid crust
mantle:highly viscous
core:solid inner core
Answer:
We can use the example of the Greater Accra region, one of the new regions of Ghana.
Explanation:
The Greater Accra region consists essentially of the city of Accra, and its immediate sorroundings, and has over 4 million people.
As the most populated region in the country, its regional economy is the most important for Ghana. It is where a great part of the country's industrial and service sectors are located. The reason for this is geographical: people living close to each other in cities tend to form closer economic ties that increase efficiency and productivity.
