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.
It's either 1 or 4 (hfjsjhsjsjwjje)
Answer:
False.. the brain is part of the nervous system... thats the circulmatory sytem job..
Explanation:
D. Mitosis and Cytokinesis
