What is forensic
science?

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Explanation:

Forensic science, the application of the methods of the natural and physical sciences to matters of criminal and civil law. ... Almost any science can be a forensic science because almost any science can contribute to solving a crime or evaluating a civil harm.

"Forensic science is a critical element of the criminal justice system. Forensic scientists examine and analyze evidence from crime scenes and elsewhere to develop objective findings that can assist in the investigation and prosecution of perpetrators of crime or absolve an innocent person from suspicion."

Explanation:

Strictly from: https://www.justice.gov/olp/forensic-science#:~:text=Forensic%20science%20is%20a%20critical,an%20innocent%20person%20from%20suspicion.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.