Across
- 2. a part of a plant that is usually under ground
- 5. a living thing's surroundings
- 7. a pretend version of something that scientists use when the real thing is hard to work with
- 9. the outside of something
- 12. the specific form and shape of something
Down
- 1. a physical trait or behavior that helps a living thing survive in its environment
- 3. a part of a tree that grows out from the truck and usually has leaves
- 4. a group of things that affect each other and work together as a whole
- 6. information that can be used to support or reject an idea
- 8. a part of a plant that is often flat and green
- 10. the thick middle part of a tree
- 11. what something does