| A | B |
|---|
| roughly | approximately |
| surface | top or outer layer of something |
| network | group of connected things |
| rather | instead of/in place of something |
| creature | animal |
| incentive | reward for doing something |
| hampered by | hurt by |
| pressure | the force against something |
| crush | destroy by pushing on something |
| enclosed | not open; surrounded |
| cylinder | a geometric shape like a can |
| helmet | head protector |
| descend | go down |
| density | thickness |
| species | type or kind of animal or plant |
| hollow | empty inside |
| diameter | measurement across something |
| diversity | variety |
| expert | someone with specific knowledge |
| look out | watch for possible danger |
| give up | quit trying |
| get back | return from somewhere else |
