Does homeless people have a greater risk they might have covid-19

Yes, the homeless people are at a greater risk of having the COVID-19 because most of the time they are in public with other people who might have the coronavirus. They roam around freely which puts them at a higher risk of getting the COVID-19.

Possibly

Explanation:

Possibly.  Homeless generally are less healthy due to malnourishment and other harsh conditions.  They are usually less likely to have access to healthcare.

c, the cilia in the trachea squeeze the material out of the body as mucus

explanation:

they can lead to suîcîde

so yes