A cubic centimeter (cc) is volume which is a measure of the displacement of the engine. This is the total volume of all the cylinders (no. of cylinders x cross section area x stroke length) 1000 cc = one liter. so a 1500 cc engine is the equivalent displacement of a 1.5 liter engine.
The trumpeter swan (Cygnus buccinator) is a species of swan found in North America. The heaviest living bird native to North America, it also is on average, the largest extant species of waterfowl with a wingspan that may exceed 10 ft (3.0 m).
The difference is in the coloring of their bills and feet. The English Mute have reddish orange bills and jet black feet. The Polish Mute is a pure white version of the Mute Swan. They have bright orange bills and light buff-colored/ grayish colored feet. Mute Swans produce a clutch of young once a year. Mute Swans typically have between 5-10 eggs and typical brood sizes are from 1-9 cygnets. Incubation is between 30-40 days. Captive male Mute Swans typically weigh between 24-30 pounds with the females weighing approximately 17-23 pounds.