The answer to the item above is letter "C. surface". Surface waves are mechanical waves that propagate in the interface of differing media. These waves very usually have larger altitudes and longer wavelengths than the body waves.
The answer is, b. other substances
Answer: The birth rate would go down.
Explanation: Most couples who have babies are young people- and if those young people move to urban areas before they have children- the birth rate will go down.
Source: My own logic: Use At Your Own Risk- although I’m almost 100% sure I’m right. Hope this helped!
Answer:
The Akkadians migrate from Arabia. He became emperor by defeating each city-state in Sumer. He left governors for each city state.
Explanation:
