Answer:
the heart it is because the heart beats and it goes up and down
<span>cardiorespiratory endurance and muscular strength</span>
When a Ribosome in the cytoplasm attaches to a mRNA molecule (I’m in 9th grade and we did this last semester so I’m pretty sure it’s right) :)
The symbol Al+3 is a cation. Therefore giving us the correct answer being option B. cation.
Hope this helps! :)