Answer:
Vaccine
Explanation:
I'm not sure but it seems like the most logical answer.
Wet because the mass in air is water like evaporation and condensation
It is important in determining whether injuries/death was an accident or purposeful, and if purposeful, who, how and why did someone do it. They determine the weapon through the ligature marks left, the shape, force and impact of the injury, the location of the injury, and by analysing any fragments and trace evidence left on the wound
