6. a, 7. c, 8. b , 9. e , 10. d , 11. e, 12.c
I believe it's lactic acid and energy.
The correct answer is hypertonic
Volcanic<span>eruptions, forest fires, pollen which can cause allergies, and ozone which is a pollutant made after lightning interacts with oxygen which can cause iritate the eyes, throat and lungs.
hope I helped </span>