
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.
The countries currently on stage 4 of demographic transition model are.. Argentina, Australia, Canada, China, Brazil, Singapore, South Korea, U.S. , and most of Europe.
Answer:
B. Buddhism
Explanation:
The Four Noble Truths comprise the essence of Buddha's teachings.
The wind from the ocean keeps it cooler in summers. This is just a guess, but I think the sun reflecting on the ocean helps keep it warmer in the winter.