Across
- 3. likely to change
- 7. living things
- 9. the whole surroundings of your life
- 10. a way of doing something
Down
- 1. the wearing away by weather
- 2. plants or animals grouped together
- 4. an absence of living organisms
- 5. test no other effects/results
- 6. the science or study of all living things
- 8. the study of the earth