The classification of some organisms has changed. Which new process is used to reclassify organisms?
A. Organisms are now given Latin-based scientific names.
B. Structures are now examined at the molecular level.
C. Organisms are now divided into three kingdoms.
D. Structures are now used to classify organisms.
In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.
