Across
- 2. materials found in nature
- 3. the parts of a fish that take in oxygen from the water
- 6. someone who uses math and science to solve problems
- 7. a place where an animal can be safe
- 9. the way you observe and learn - there are five kinds
- 10. materials made by people
- 11. things that are not alive
Down
- 1. all the living and nonliving things in a place
- 4. what objects are made of
- 5. a test that scientists do
- 8. things that are alive