What is the rest of the question
That would be A. Hopefully I helped you out.
Answer: That would be Viruses
Explanation:
It should most definitely be Virus, as a Virus needs a host and will genuinely be immune to what the human body throws at it. Unless it's a cure, the Virus will survive
They are 2 different item's glass is glass but what you make out of it is what counts
The main reason is because they are heavy, and because they don't have to chase their food. They're not predators and their shells give them protection like running away gives protection to other herbivores.