Answer:
atrial fibrillation
Explanation:
Atrial fibrillation is an irregular and often rapid heart rate that occurs when the two upper chambers of your heart experience chaotic electrical signals. The result is a fast and irregular heart rhythm. The heart rate in atrial fibrillation may range from 100 to 175 beats a minute
I believe the answer is: C
A sedimentary rock can become an igneous rock by melting and solidification.
Answer:
b, ions
Explanation:
Poteassium and sodium in their ion molecular form in the axon of a neuron as they are are used in proton pumps to aid in the movement of neurons.