Many insulating materials contain spaces filled with air because air is what type of material?

It is because air is a poor conductor of heat. Good luck ;)

Jehdhdhdhehejeje

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.