How is oxygen carried from the lungs to the tissues? a. It binds to a protein called hemoglobin in red blood cells
b. It is carried by cilia through the bronchioles
c. It leaves the alveoli and enters mucus
d. It leaves the bronchi and enters the capillaries

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters