Answer:
The flu is caused by influenza viruses that infect the nose, throat, and lungs. These viruses spread when people with flu cough, sneeze or talk, sending droplets with the virus into the air and potentially into the mouths or noses of people who are nearby.
Explanation:
Answer: so tht they dont die frm exposure to their predeters
Explanation: thts what i would say
Answer:
A group of similar cells make up a tissue. Several tissues make up an organ.
Explanation: