Name_________________________________________
Scott Foresman Reading Vocabulary Unit 4
Exploding Ants
Expository Nonfiction
| critical | being important to the outcome of a situation |
| enables | gives ability, power, or means to; makes able |
| mucus | a slimy substance produced in the nose and throat to moisten and protect them |
| scarce | hard to get; rare |
| specialize | to develop in a special way |
| sterile | free from germs |