How could the skin cells under the victim’s fingernails indicate that a struggle occurred?

Hello, to answer your question

It's because when they were struggling they scraped the attackers skin when they struggled and also with that D.N.A. under the nail they could test the attackers D.N.A. AND find him

                 Signed by, Virtuoso Sargedog

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

answer:

is this serious

explanation: