Agave nectar (sometimes called agave syrup) is most often produced from the Blue Agaves that thrive in the volcanic soils of Southern Mexico. Agaves are large, spikey plants that resemble cactus or yuccas in both form and habitat, but they are actually succulents similar to the familiar Aloe Vera.
Quick Answer. The instruments that measure water vapor content in the air are called a hygrometer and psychrometer. Water vapor is water suspended in the atmosphere in the form of an invisible gas. Humidity is the measure of water vapor content of the air. Continue Reading
The warmer the air is, the more water vapor it can hold. When the air contains as much water vapor as it can hold at a certain temperature and pressure, the air is saturated. The amount of water vapor in the air compared to the amount the air can hold at saturation is called relative humidity.