Answer:
"Biofuels"
Explanation:
I don't know if this counts but I guess it's not one of those.
Answer:
Explanation:
A sonic boom is a loud sound kind of like an explosion. It's caused by shock waves created by any object that travels through the air faster than the speed of sound. Sonic booms create huge amounts of sound energy. When an object moves through the air, it makes pressure waves in front of and behind it.
