The article asserts that carbon monoxide is likely the most harmful pollutant in car exhaust. why is it so harmful? what necessary body function does it hinder? explain how carbon monoxide can suffocate you at a molecular level.

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.

its temperature is increasing. this causes molecular vibrations to increase.