Oxygen diffuses from the alveoli into surrounding capillaries. Oxygen diffuses from the alveoli into surrounding capillaries. Oxygen is carried through blood vessels to a capillary. Oxygen is carried through blood vessels to a capillary. Oxygen diffuses from the blood to the body's tissues. Oxygen diffuses from the blood to the body's tissues. Oxygen binds to a molecule of hemoglobin. Oxygen binds to a molecule of hemoglobin. Oxygen enters a red blood cell. Oxygen enters a red blood cell.

Why should the united state be concerned about air pollution in china?

What was the land like over 500 million years ago? what was under the sea?

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.