Capillary walls are only one cell thick, so oxygen can pass out of the blood, and waste material can pass into the blood.

Which is true regarding smoke?

A. compete combustion results in dark black smoke B. the lighter the smoke, the more fuel it contains C. the color of smoke does not indicate fuel content D. The denser the smoke, the more fuel it contains

A chest tube can be removed when the pleural drainage has stopped or slowed to less than 100 mL over the preceding 24 hours.

Answer the following statement true (T) or false (F)