20 here are the words but the letters are mixed up. write the correct variant: senoi - eadl - leasere to - clearnu - oalc - stancesub - chitisbron - nouspoiso - menttreat - ources - etyvari - istex to -

1. noise
2. lead
3. release to
4. nuclear
5. coal
6. substance
7. bronchitis
8. poisonous
9. treatment
10. source
11. variety
12. exist to