Answer:
Different things make different vibrations when they hit, and that's why you hear high notes and low notes. Things that vibrate quickly make small waves in the air, and that sounds to you like a high-pitched note. Things that vibrate slowly make longer waves in the air, that sound to you like a low-pitched note.
Answer:
answer number A carbon dioxide
I think it is B. histones
Chromatin contains proteins called hemoproteins.
I hope this helps HilalSchair6e
It is basically A burning forest like the one in California
