| A | B | 
|---|
| Homeostasis | The process of maintaining a life-supporting internal environment. | 
| cell | The smallest unit of a living thing | 
| stimulas | Something that causes a response. | 
| asexual reproduction | A type of reproduction that requires only one parent. | 
| sexual reproduction | A type of reproduction involing two parents. | 
| heredity | the passing of genetic characters from parents to offspring | 
| metabolism | substances are broken down to yield energy | 
| 33.6 G | 3360 cg | 
| 3.36 mg | 0.336 cg | 
| 504 km | 504000 M | 
| 5.04 cg | 50.4 mg |