When robin was born she weighed under 3 pounds. she also struggled with respiratory problems due to a lack of in her lungs.

The answer is: Pulmonary surfactant

Explanation:

Pulmonary surfactant is a surface-active phospholipoprotein produced by the type II alveolar cells of the lungs. The pulmonary surfactant is composed of proteins and lipids, which has both hydrophobic and hydrophilic regions.

The lack of this pulmonary surfactant in the lungs can cause respiratory problems in infants.

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.

answer; human capital;