There are about 20,000 species, or kinds, of bees. Bees live
everywhere in the world except on high mountains, in the Arctic and Antarctic,
and on some small islands in the ocean.
Some bees are as small as 0.08 inch (2 millimeters). Some
bees are as big as 1.6 inches (4 centimeters). Bees come in many colors—black,
gray, yellow, red, green, or blue. Most bees live alone. They are called
solitary bees. Some bees live in groups called colonies. They are social bees.
(Encarta Encyclopedia)