Answer:
By organising them into five major kingdoms and further dividing each kingdom into phyla (or divisions), classes, orders, families, genus, and species.
Step-by-step explanation:
There are five kingdoms:
- Monera: bacteria
- Protista: amoeba, paramecium, euglena
- Fungi: yeast, rhizopus
- Plantae: flowering and non-flowering plants
- Animalia: animals (vertebrates and invertebrates)
Organisms that share the most similar features are grouped into the same species. Species with similar features fall under the same genus. Several genus make up a family, several families make up an order, several orders make up a class, several classes make up a phylum (or division), and several phyla (or divisions) make up a kingdom.
Note: there are three domains (or superkingdoms): Archea, Bacteria, and Eukarya.