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The answer is: 119m/s
Some kinds of signals, like the ones for muscle position travel on extra-fast nerve impulses at speeds of up to 390 feet per second (119 meter/second).
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Formation of island chains occurs when convergent boundaries interact and is denoted as option A.
<h3>What is Convergent boundary?</h3>
This refers to an area where two or more lithospheric plates collide in the earth.
When the y interact, island chains are formed which consists of sea with sparse islands around the area.
Read more about island chains here brainly.com/question/12433780
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Cardiac Muscle, reason its called Cardiac attack when you have that sort of " Heart Attack "
Answer:
Sun
Explanation:
All energy comes from the sun.