B. arthroclasia
Not really sure why this needs 20 characters but ok
Go to a safe place and call the police
Answer:
C
Explanation:
It's an exersize done without oxygen :)
Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
A and C if it’s the thing I was doing
