It holds more moisture
A humid place is best because humid air rises and is full of wetness so water evaporates into humid air.
Humid air has more water vapor mixed in it than dry air has.
in a humid place under a tree.
Humid air is more dense.
Let it lie around exposed to the air in a hot, humid place.
Yes, humid air is heavier than dry air because water vapor molecules in humid air add to its overall weight.
No, humid air is not a solvent. A solvent is a substance capable of dissolving other substances, while humid air is simply air with a high moisture content.
There's not enough cool air for convection to take place.
Yes, there is less oxygen in humid air compared to dry air.
Moisture (water droplets) is saturating the air when the weather is humid.
If it is hot humid air, the air will be filled with a lot of moisture, and your hands feel all sticky and when you breathe, the air feels thick. But when it's cold humid air, the air has less moisture and it may feel easier to breath in. But it still has the same humidity as the hot air, you just feel it different. This is because when you say the air is humid, you are basically saying that the air has moisture in it. But the air always has moisture in it, but you can feel it when there is high humidity. So when it is cold air, you feel the humidity less. Because if it is hot air, that means the sun must be out, and when the sun is out, it evaporates the sweat and moisture off your skin and goes into the air. That is why in a crowded room, we describe the air as 'stuffy' because it is filled with the body heat from all the people in the room. I hope I answered your question properly. :)
Warm air