The air that you breathe in is different from the air that you breathe out in several ways.
copy and complete the table below to show four
the means fill in the space.

inhaled air (breathed in) exhaled air (breathed out)
more oxygen

more water vapour
cooler warmer

Inhaled air has no Pb particles that's why is so vital ( among the concentration of O2) while the exhaled air is so carbon dioxide rich and it has the temperature of the ( human) body exhaling it ( which means is warmer or cooler depending on the temperature of the atmosphere).

Not enough information about the limits of the water vapors concentration in the air in order to be breathable

c.more precipitation,but only when emission levels.

that is true   : ) hope this you