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lozanna [386]
3 years ago
12

What is a heart murmur?

Biology
1 answer:
Alex_Xolod [135]3 years ago
3 0
It is an extra or unusual sound heard during a heartbeat
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3.Why is the surface of the Earth in constant motion?
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I studied this before and I'm pretty sure it's D (sorry if I'm wrong)
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