The disease is mainly caused by a lack of a slippery substance in the lungs called surfactant. This substance helps the lungs fill with air and keeps the air sacs from deflating. Surfactant is present when the lungs are fully developed.
https://medlineplus.gov/ency/article/001563.htm
<span>Actually the information or data in the catalog DB or data base connection takes place by relevance and then mainly here we get the search string or required data which we want or entered, with clear exact search filters which has been directly chosen, and hence these will be at the top of the results list for sure.</span>
Answer:
the periodic table
Explanation:
the periodic table show all the element to your answer
