mammalia: ex. whales,monkey and humans
aves: ex. ostrich, humming bird and other birds
reptilia: ex. alligator, lizard, and others
amphibia: ex. frogs, toads and salamanders
pices: ex. fishes
the five major classes of presidential duties are Foreign Affairs, Domestic and Military Administration, Legislation, Appointment, and Judicial Functions
the major classes of materials
The vertebrates are further divided into five groups or classes.
Its Five classes of ArthropodsInsectsArachnidsCrustaceansCentipedes and Millipedes
Emperor, Nobility and Priests were the major classes of Aztec society.
The five classes of people in the the city of Rome were the patricians, the plebeians, the equites, the proletariat and the slaves.
The three major classes of cnidarians are hydrozoans, jellyfish, and sea anemones and corals.
Carbohydrates,Lipids,Proteins and Nucleic Acids are the four major classes of organic compounds.
There are five classes of cnidaria
Five
According to the Marketing Glossary on coolavenues.com, there are five classes of consumer products: "classes include convenience goods, shopping goods, specialty goods, unsought goods, and services."
Colleges definitely offer risk management classes if they offer a finance or a business major. Most major universities and college have these sorts of classes.