帮忙看看这个该填什么———— is the amount of water vapor in the air

帮忙看看这个该填什么————is the amount of water vapor in the air compared to the amount of water vapor needed for saturation at a certain temperature.The temperature at which air is saturated and condensation begins is the————When air is cooled to the dew point near the ground,it forms a stratus cloud called_______When you observe a change in the weather from one day to the next,it is due to the movement of_______A_______ is a large swirling low-pressure system that forms over tropical watersA________ studies weatherAn________ connects locations of equal temperatureAn________ connects locations of equal pressureA________ is a violent whirling wind that moves over land