In order to better understand similarities and differences among biological organisms, scientists developed a system of classification. initially, the system only consisted of two kingdoms - animalia and vegetabilia. now, there are six kingdoms - eubacteria, archaebacteria, protista, fungi, plantae, and animalia. this demonstrates that

This illustrates that the science of taxonomy is continually evolving and improving as more knowledge is derived and scientists understand evolution better. The discovery of more and more fossil evidence showing the branching of major taxonomic units has improved this knowledge. Further modern technology, such as genetic and molecular techniques, have allowed scientists to study the relatedness of existing species.