Answer:
<u><em>Hey There the correct answer would be is D. Individual organisms</em></u>
hope it helps!
B.)
Weathered rock
I hope this helped
These ions bind to troponin, which forms a complex with tropomyosin. The process is called <span>Excitation-Contraction Coupling 3.</span>
It includes series of events, beginning with the production of an electrical impulse (action potential)<span> and ending with </span>contraction<span> of </span>muscles <span>in the </span>heart.
