| A | B |
| arboretum | A park where trees and shrubs are displayed and studied. |
| aviary | A structure for keeping birds in captivity, usually in a zoo or wildlife park. |
| botany | The scientific study of plants. |
| chameleon | A small lizard that changes the color of its skin. |
| cultivate | To prepare land for growing crops; to raise or tend plants or crops. To promote the growth of friendships or interests. |
| habitat | The environment in which a plant or animal normally lives. |
| nurture | To nourish or feed; to help to grow or develop. |
| talon | The claw of a hawk, falcon, eagle, or other bird of prey. |
| terrarium | A transparent container in which small plants or animals are kept. |
| zoology | The scientific study of animals. |
| antibiotic | A substance produced by certain fungi, bacteria, or other organisms. This substance stops the growth of harmful bacteria that can cause illness. |
| biopsy | The removal of tissue from a living person for examination or study. The study of such tissue. |
| biosphere | The part of Earth and its atmosphere in which living things exist. |
| devitalize | To lower or destroy the physical energy or vigor of someone or something. |
| microbe | A tiny life form that can be seen only through a microscope; a germ. |
| symbiosis | A close, beneficial relationship between two or more organisms. These organisms often, but not always, benefit each other. |
| viable | Capable of continuing to live, grow, or develop under favorable conditions. Capable of working successfully or effectively: a viable plan. |
| vitality | Physical or mental energy; vigor. The quality that distinguishes the living from the nonliving. |
| vivacious | Full of spirit; lively. |
| vivid | Bright, distinct, and intense. Creating lifelike images within the mind. |
| audible | Capable of being heard. |
| coherent | Clearly thought out or expressed. |
| digress | To stray from the main subject when you are writing or speaking. |
| eloquent | Persuasive and graceful in speaking or writing. |
| garble | To mix up or scramble a piece of communiction so much that people cannot understand it. |
| impromptu | Presented without preparation or rehearsal. |
| monologue | A long speech made by one person. |
| oratory | The art of speaking in public. |
| proclaim | To declare so plainly that there is no doubt as to one's meaning. To announce officially and in public. |
| verbal | Communicated through words. |