Across
- 3. birth___ are structural changes present at birth
- 6. to make an area harmful by adding harmful substances
- 8. connected to water
- 9. dump sth ___ sth
- 10. connected to heat
- 11. the adjective of " poison"
- 12. another word for "happen"
- 13. he was ___ to radiation in the war.
Down
- 1. connected to seeing
- 2. another word for "pollution"
- 4. to think of an idea
- 5. the ships ___ oil into oceans
- 7. energy comes from a nuclear reaction
- 9. to make sth clearer by giving examples