Answer:
I think c if not im sorry
Explanation:
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<span>C. fish population decrease
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Answer:
The electrical impulse travels from the sinus node to the atrioventricular node (also called AV node). There, impulses are slowed down for a very short period, then continue down the conduction pathway via the bundle of His into the ventricles.
The 1918 Spanish flu, it infected 500 million people across the globe and it had killed up to 100 million people which is about 5% of the worlds population in 1918.
