A. a nonprofit is the correct answer.
Answer:
A respiratory tract infection affects the respiratory system, the part of your body responsible for breathing. These infections can affect your sinuses, throat, lungs or airways. There are two types of respiratory infections:
Upper respiratory infections.
Lower respiratory infections.
Explanation:
A respiratory tract infection affects the respiratory system, the part of your body responsible for breathing. These infections can affect your sinuses, throat, lungs or airways. There are two types of respiratory infections:
Upper respiratory infections.
Lower respiratory infections.
Chimpanzees. they held the virus and their exposed blood gave it to humans