https://www.youtube.com/watch?v=yxonJTWhBJQ&t=2s 1- What does the term ‘germs’ usually refer to?  2- What do all germs have in common?  3- Define the term ‘modes of transmission’ and give an example.  4- What is a major disadvantage to a virus, if it replicates too much, too quickly?  5- If there’s too little of a virus, what is