Answer: to defend itself
Explanation:
This natural reaction prepares you to either flee or protect yourself in dangerous situations. Your heart rate increases, your adrenal gland releases cortisol (a stress hormone), and you receive a boost of adrenaline, which increases energy. This fight-or-flight response occurs in the alarm reaction stage.
during the time cholera was a big issue, technology such as internet or computers didn't exist. Today, technology is what can help us access information from any place really fast.
By wearing a mask and social distancing