The group of organisms can produce fertile offspring. That is what
makes the group of organisms a species.
Answer:
Cilia are motile in the lungs responsible for keeping the airways clear of dirt and mucus by their characteristic beating motion and rhythmic waving allowing a person to breathe easily and without irritation. These are present in both the lungs as well as middle ear.
As in Primary ciliary dyskinesia , there are defects in the action of cilia in the lining of the respiratory tract , middle ear , sinuses , eustachian tube etc the cilia cannot peforms its regular role .Infections can lead to an irreversible scarring and obstruction in the bronchi resulting in :
1) Shortness of breath.
2) Recurring chest colds.
3) Sinusitis.
4) Coughing , gagging , choking,
5)Middle ear infections
Answer:
dont let him deltete ur question okay kiddo??
Explanation:
A stellar remnant is the correct answer
Mutation is random because there is really no way of knowing whether a child will inherit it, whereas natural selection is predisposed in either parent.