Mira analyzed oxygen and carbon dioxide in inhaled and exhaled air. she found that the percentages of both gases were different in each. what other gas would most likely also have different amounts in inhaled and exhaled air? ozone (o3) hydrogen (h2) water vapor (h2o) sulfur dioxide (so2)

Answer is Water Vapour.

Water vapour is present in large quantity in the atmospheric air. When we inhale the air, water vapour along with oxygen enters our body. The body absorbs the oxygen into the blood. The carbon dioxide that is present in the blood is released into the lungs. The body also produces heat and has a lot of water present in it. The water vapour that is released during the body processes also gets released with the carbon dioxide gas. Thus the percentages of gases inhaled and exhaled will differ.

The answer is C, Water vapor (H2O).

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: