What is the simlarity of goblet cells and cilia?
a. both moisten the air.
b. both filter the air.
c. both secrete mucus.
d. both diffuse oxygen.

How had the study of mitosis affected scientists knowledge of cancer

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?