Question

the first heartbeat of sound​

Answer 1

Answer:

the First heartbit of sound comes when you do some sports activity like running , jumping , and etc are the work....

Answer 2

$\huge\underline\pink{ANSWER}$

Hearing a baby's heartbeat for the first time is an exciting milestone for new parents-to-be. A fetal heartbeat may first be detected by a vaginal ultrasound as early as 5 1/2 to 6 weeks after gestation. That's when a fetal pole, the first visible sign of a developing embryo, can sometimes be seen.

I hope its helps you