please help!!! science homework?

Question

i only have 3 more questions left on this crossword puzzle.. please please PLEASE help...
1. a solution containing a weakened or inactive version of a virus
so far for that one there are 7 boxes...~ _ _c_ _ _ _

2. The use of bacteria and other microorganisma to change pollutants in soil and water into harmless chemicals~ 14 boxes:
_ _ _ _ _ _ _ _i_ _ _ _ _

3. Bacteria that remain inactive until enviromental changes are favorable~ 10 boxes~ _n_ _ _ _ _


PLEASE and thankyou!!!!!!!!!!~
:-|

Answer 1

1. vaccine

2. bioremediation

3. inactive