Answer:
cilia are found in the lungs, respiratory tract and middle ear. These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation. They also help propel sperm.
Explanation:
I can help with one but not 3... The Cell membrane can be used to help protect the inner parts of the cell such as the, mitochondria, cytoplasm, endoplasmic reticulum. (List more).
D, specifically because if the parents have/had this, it is likely the patient does
Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Halo, any of a wide range of atmospheric optical phenomena
