Hollow spaces in the skull above and beside your nose are . {free brainliest!!!} A. alveoli
B. cilia
C. sinuses
D. pleura

Explanation:

SINUSES are hollow spaces in the bones of your head above and below your eyes that are connected to your nose by small openings. Sinuses help regulate the temperature and humidity of inhaled air.

C. sinuses

Explanation:                                                                                                                     The paranasal sinuses are hollow, air-filled spaces located within certain bones of the skull (Figure 16). All of the sinuses communicate with the nasal cavity (paranasal = “next to nasal cavity”) and are lined with nasal mucosa.

not sure if this is what you'r looking for eubacteria and archaebacteria