Answer: water aids the digestive system
Explanation:
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles. Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron.
Answer:
Just so u know, there is no pic
Explanation:
A small or tiny part, amount, or proportion of something.
Don't hold me to it, but I am pretty sure it is A. critical thinker
