Across
- 5. make their own food
- 7. attracts or repels certain objects
- 9. lives both in land and water
- 10. a measure of how much matter is in an object
- 12. Without backbone with legs and wings
- 13. has feathers and lay eggs
Down
- 1. how high or low sound is
- 2. caterpillar stage of a butterfly
- 3. push or pull
- 4. life for trees and wild animals
- 6. A change in position of an object
- 8. a pulling force between two objects
- 11. how fast an object moves at a certain distance