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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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Cells such as water cells or aquatic microorganisms need and required to have a large surface area increased. Because this helps them stay afloat without spending much amount of energy to float.

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