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.
Answer:
family planning is termed as “the ability of individuals and couples to anticipate and attain their desired number of children and the spacing and timing of their births.
2,3,4, are right 1 is incorrect as far as I can tell
