Sure what is it , where is it
Answer:
The tuba
Explanation:
The tuba produces sound by vibrating or buzzing the lips into a large cupped mouth piece. It produces different pitches by changing the mouthpiece.
2................................................
2.5g
10÷2=5
5÷2=2.5
everytime it completes a half life, you divide the number by two
This is more common sense rather than biology, but talking to someone would slow it down, so you know it’s not c or e. The best idea is b
