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
Answer: The difference between a loan and a bursary is that a loan has to be paid back whilst a bursary is non-repayable.
Answer:
So what is your question?
Answer: we need a,b,c,d to find out
Explanation: didn’t help