<span>The role of surfactant in neonate is it reduced the surface tension of lung fluids and makes alveoli more stable.</span>
Ptolemy could not explain * Retrograde motion of the planets* with out epicycles and deferents.
The relative humidity increases with the temperature.
Dragonflies are most closely related to damselflies. Damselflies are smaller, slimmer, and most of them fold their wings along their body when they are resting.