In general terms, bees are winged, flower-feeding insects that have branched body hairs. Pollen is the main protein source that bees use.
They also use oils and flower nectars for energy. The bees collect pollen from different plants. Going from plant to plant they sometimes leave pollen on the plants. The pollen falls on the plants of a different species, which results in cross-pollination. Bees have special bodies that contain branched hair. This type of hair aids the bees in collecting pollen.
Some bees are able to make honey from the flower nectar. Usually honey bees and sting-less bees create the most honey. There are over 20,000 different species of bees in the world. Lots of them have not been studied or even discovered. Bees can be found across the world with the exception of areas with high altitude or freezing temperatures. The length of bees ranges from 2 millimeters to 4 centimeters. Bees are usually black and gray but there are others that are yellow, red, blue and green.