Answer:
NAME IT THE WORLD OF WONDERS
Explanation:
THE WORLD OF WONDERS
Competition and natural selection
When an individual muscle fiber receives a threshold stimulus, it contracts as much as possible. ... a threshold stimulus is the minimum amount of energy needed to make a muscle fiber contract.
B. I'm not sure but they are apart of the <span>Animalia kingdom. </span>
Well its either an compound or molecule cuz both breaks apart to form ions.
hope this helps.
