Answer:
a substrate control is an uncontaminated sample
Explanation:
it allows forensic scientiststo compare the two samples to better observe whether a flammable liquid is present
I mean establishing trials in court I believe is one and I also believe managing American territories is one as well, I’m sorry I couldn’t help more
A campaign is any series of actions or events that are meant to achieve a particular result, like an advertising campaign of television commercial’s and internet ads that tries to convince kids to buy bubble gum-flavored toothpaste