The choices are:
A. folic acid
B. mercury
C. vitamin D
<span>D. vitamin C
The answer is A. folic acid
Source:</span>https://www.health.ny.gov/publications/1335/
Based on a study, folic acid can prevent brain damages and spinal problems 70%. Giving sufficient folic acid during the first month of pregnancy can help five better health condition and prevent birt defects. There are plenty of foods containing folic acid, mainly coming from cereals, grains, and vegetables.
The outer ear includes: auricle<span> (</span>cartilage<span> covered by </span>skin<span> placed on opposite sides of the head) </span>auditory canal<span> (also called the ear </span>canal<span>) </span>eardrum<span> outer layer (also called the </span>tympanic membrane<span>)</span>
Answer: the major function of mucus is to protect the lung through mucociliary clearance against foreign and chemicals entering the lung.
Explanation:
