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Answer. Scientific laws DO NOT explain how something, or why something happens. A scientific law can be thought of simply stating what happened. A scientific theory tries to explain how and why something happens on a scientific level.
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The answer is Asian American
Pulmonary surfactant is a mixture of lipids and proteins which is secreted into the alveolar space by epithelial type II cells. The main function of the surfactant is to lower the surface tension at the ir/liquid interface within the alveoli of the lung. In babies born prematurely, pulmonary surfactant may not be present in adequate amounts due to insufficient exocytosis in type II alveolar cells.
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The alkali metals lithium, sodium, potassium, rubidium, cesium, and francium constitute group 1 of the periodic table. Although hydrogen is in group 1 (and also in group 17), it is a nonmetal and deserves separate consideration later in this chapter.
Elements: Francium; Lithium; Potassium; Rubidium...
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