Answer:
The investigators were making use of the guilty knowledge test.
Explanation:
The guilty knowledge test, as the name suggests, uses the knowledge that only a perpetrator would know to test if that subject could be guilty of that crime. A polygraph examiner watches the subject's physiological arousal under the belief that certain details will provoke reactions. In this particular case, the real criminal would know that the crime was committed with a knife, not a letter opener. Therefore, if the subject being examined is the perpetrator, he will not react to "letter opener" as he will to "knife".
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat. So i would say Convection
Hello There!
It was the Battle of Baltimore.
Hope This Helps You!
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- Hannah ❤
The bays are excellent for shipping, shipbuilding, and fishing
