| A | B |
|---|
| population | the number of people who live in a place |
| caretakers | people who take care of others |
| success | a result that was hoped for |
| survive | to stay alive |
| recognize | to know and remember from before |
| relatives | animals or people who belong to the same family |
| threatened | caused danger or harm |
| resources | things that are used to help or support |
| whooping crane | a bird that is threatened |
| ultralight | a very light airplane |
| summer vacation | only 3 weeks away |
