sound travels through a medium in mechanical waves a mechanical wave is a disturbance that moves and transports energy from one place to another through a medium
Answer:
B
Explanation:
The writers are from a trusted source that is considered impartial. The message is backed up by scientific investigation, and the writers have no monetary gain from their message.
Answer:
a planet the is human habitable or just plain out earth
Explanation:
false (if your talking about animals) animals cannot form letters. Animals cant do this because they dont have voice boxes capable pf creating a word, thats why animals chirp, yip, bark, cry, and chitter.
