| A | B |
|---|
| life cycle | the stages of growth of a plant or an animal from the beginning of its life to the end of its life |
| life span | the length of time from the beginning of a plant or an animal’s life to the end of its life |
| reproduction | the process by which living things produce offspring |
| growth | the process by which plants and animals get bigger |
| metamorphosis | the process of change in body size and shape of some animals as they develop |
| exoskeleton | external skeleton that supports and protects an animal's body |
| health | when the body is free from illness and injury |
| balanced diet | a variety of healthy foods every day |
| harmful substances | things such as drugs, alcohol, and tobacco that do damage to a body that will last a lifetime |
| exercise | an activity that requires physical effort that improves health and fitness |
