Biology is the study of living things. It includes the study of there habitats, behaviors and functions . There a wide variety of living organism on our plant.
There are millions of varieties of living things/organisms, because of this scientist started classifying organisms. Species with obvious similarity are placed together in large groups, each called a genus. The name of the genus and the species on organisms belong to is combined to give the scientific name. Example; the genus for human is Homo and human belong to the species sapiens. Therefore the scientific name for human is Homo sapiens. Please note that each groups as it own set of features that define the group.
Taxonomy is the science of placing organisms into the correct groups.