| A | B |
| middle | the center of something |
| dinner | the main meal of the day |
| tomorrow | the day after today |
| album | a book with blank pages |
| concentrate | to think about only one thing |
| hardware | things made of metal, such as nails and other tools |
| climate | weather of a place over a long period of time |
| habitat | where a plant, animal, or person lives |
| examine | to look at closely |
| organism | any living thing |
| shelter | a safe place |
| underground | below the surface of the earth |
| institute | a group of people who get together to do special work |
| prejudge | to judge ahead of time |
| precaution | care taken ahead of time to avoid harm |
| humans | persons |
| improve | to make better |
| scientist | a person who is an expert in science |
| preview | to look at something ahead of time |
| displease | to make angry or not happy |
| disappear | to stop being seen or to go away |
| bragged | talked about with too much pride |
| marvelous | very, very good |
| realized | understood fully |