The seeds and leaves of the fennel plant both have a licorice flavor, although the flavor of fennel is milder and somewhat sweeter than anise. Fennel seeds are actually a spice, although the leaves, stalks and roots of the plant are known as a herb.
Definition of air mass. : a body of air extending hundreds or thousands of miles horizontally and sometimes as high as the stratosphere and maintaining as it travels nearly uniform conditions of temperature and humidity at any given level.
Air mass types. Air masses are classified into groups depending on their basic temperature and humidity characteristics. There are six main types of air masses that affect the British Isles.We classify these air masses primarily by the area in which they originate.ir mass types. Air masses are classified into groups depending on their basic temperature and humidity characteristics. There are six main types of air masses that affect the British Isles.