Answer: The second question answer: Sympathetic nervous system.
Explanation: The sympathetic nervous system directs the body's rapid involuntary response to dangerous or stressful situations. A flash flood of hormones boosts the body's alertness and heart rate, sending extra blood to the muscles
Answer:
Through sex
Explanation:
A male and a female organs interact with each other with sperm and eggs forming a babies
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Pandemics are diseases that spread over large areas and affect large numbers of people. The Black Death in the 14th century killed nearly one quarter of Europe's population. The Spanish Flu, in 1918, killed more people than WWI.