Hello ! Really need help with this ! Please and thank you :) If a person is at rest, they have a respiratory rate of 12 breaths per minute and if they mobilize 500 ml each inhalation and exhalation, which is their tidal volume. In one minute you will mobilize a total of ml.

If a person in moderate activity has a respiratory rate of 18 breaths per minute and if in each inhalation and exhalation he mobilizes 500 ml, which is his tidal volume. In one minute you will mobilize a total of ml.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.