Answer :
Answer: You cant see it in the air because water molecules are very small . But when water is a liquid you can see it in the form of the clouds. But how you know it is there is because the water vapor in the air is called humidity.
Answer: You cant see it in the air because water molecules are very small . But when water is a liquid you can see it in the form of the clouds. But how you know it is there is because the water vapor in the air is called humidity.