| A | B | 
|---|
| animal,  | many-celled, feed on living or once-living things | 
| plants,  | many-celled, make their own food | 
| Fungi,  | Most many-celled, absorb food from other living things or dead things such as logs | 
| Protists,  | Most one-celled, make their own food or feed on living or once-living things | 
| Monerans,  | one-celled, no cell nuclei, some make their own food, some feed on living or once-living things | 
| classification | grouping things by using a set of rules or similar features | 
| genus | the second smallest name grouping used in classification | 
| species | the smallest name grouping used in classification | 
| vertebrates | animals that have a backbone | 
| mammals | have hair and produce milk for their young | 
| reptiles | have dry, scaly skin | 
| amphibians | have moist skin and no scales | 
| birds | vertebrates with feathers | 
| fish | vertebrates that live their entire life in water | 
| invertebrates | animals without a backbone | 
| vascular plants | plants with tubes | 
| nonvascular plants | plants that don't have tubes |