Answer:
One can arbitrarily divide forensic science into three broad groups: medical, laboratory, and field services.
I believe it’s
The reactants
The products
And the Arrow indicating the direction of the chemical reaction
It is true. Since it is very reactive with oxygen and water, it is kept in kerosene or some other some other oil
N=3^K-1 I really don't know how to explain it but that's the formula <span />