Your mouth, nose, throat, sinuses and lungs are lined with mucus membranes. These membranes contain mucus glands that produce - surprise - mucus. Mucus-producing membranes line specific passages in your body, like the respiratory and digestive tracts, for protection and support.
the answer is A hope this helps
Photosynthesis and industrial plants
Split up 7 on 7 and let 1 from each team sit out then trade out