The correct answer should probably be Natural selection. Those elephants could not adapt to the environment unlike those in Asia and Africa and eventually became extinct.
Answer:
Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the air particles. These particles bump into the particles close to them, which makes them vibrate too, causing them to bump into more air particles. This movement, called sound waves, keeps going until they run out of energy.
The portion of Earth’s history during which tectonic forces acted on Earth’s surface.