| A | B |
|---|
| burrow | to dig a tunnel |
| colleague | fellow worker |
| component | an ingredient |
| dilution | the thinning down of a mixture by the addition of water or other liquid |
| effective | having an effect |
| factor | an element or ingredient |
| habitat | region where a plant or animal naturally lives |
| immunity | freedom from something unpleasant |
| lethal | deadly |
| multiple | having many parts |
| particular | distinct |
| preliminary | preparatory;leading up to the main action |
| prompt | to urge; quick to act |
| proportion | a part or share of a whole |
| propose | to put forth for consideration |
| resistance | the act of withstanding or opposing |
| rodent | a family of mammals that includes mice, rats, squirrels, ect. |
| temperament | disposition |
| toxin | poison |
| venom | the poison secreted by some snakes, spiders, insects, ect. |
