1
2
3
4
5
Across
- 2. A chemical change when substances interact
- 3. Vibrations that travel through the air and are heard by ears
- 4. To sort things into groups based on their features
- 5. The passing of traits from parents to their children
Down
- 1. A community of living things and their environment working together
- 5. A form of energy that makes things warm