4.
What is a substrate control? Why is it done?
1 answer:
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
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Answer: I think b-
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Answer:
Its A
Explanation:
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Answer:
another fake id of someone who put same pfp as u.
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The way the wagon is accelerating is to the left
Explanation:
In my opinion I would say either B or D but personally I would go with B but i could be wrong so take it with a grain of salt
