The table shows that the pressure in the middle ear is less than 1 mmHg. Note that the pressure of 1 mmHg is equal to 133.3 Pa. It appears that the normal pressure in the middle ear can vary between 500 Pa and -2000 Pa.
Explain:
a) How is it possible to have negative pressure in the middle ear?
b) How the pressure values in the middle ear (between 500 Pa and -2000 Pa) are compatible with the functioning of the middle ear.

answer:

I wanna say that the answer is false.

Explanation:

No

Explanation:

Viruses can not be cured, but vaccines prevent them from spreading. Viruses arent living things, but they need a host (human, animal, or plant) to reproduce. When i virus enters the body, your body's cells fight the virus (thats why you get a fever). Vaccinations for viruses are made up of dead parts of the virus so that your body can "train" itself to fight that virus. So, no, there is no cure for viruses but you can prevent them. People are working on antiviral drugs (anti= against viral=virus) to combat them, but so far, these only weaken some viruses, none can completely cure it.

well if this is a real question here you go

they are very similar in the ways they affect the body. they affect the respiratory system and they have similar traits. both viruses evolve rapidly and have exponential growth in the body. both viruses are human to human passed.