An air is a large body of air where temperature and humidity are throughout, at given altitude. Air masses contain water and are part of Earth's The hydrosphere includes the and in the Air masses help to The first letter which is lowercase, shows found under Earth's surface, on Earth's above, this water from one place to another. the air mass The "m" stands for maritime, or over The "c" is for continental or over The second letter stands for the "A" is for Artic, "P" is for polar, "T" is for tropical, "E" is for equatorial, and "AA" is for Antarctic. The stream is a narrow belt of strong 10 to 15​