The population size of a predator species is directly controlled by the population size of it's prey. If the predator has no prey the population size will go down because they have no food.
That isn't even possible. Your body is made of them. If you had none then you wouldn't be existing.
Answer:
No
Explanation:
Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Note:
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1. hair
2. pore
3. oil gland
4. sweat gland
5. hair follicle
6. blood vessels