Answer:
The eruption of volcano
Explanation:
The volcano named Mount Vesuvius was one of the most dangerous volcanoes in the world and it was a stratovolcano which is characterized by the presence of steep slopes, and alternating layers of volcanic ashes and pyroclastic materials.
The city of Pompeii was located near to this volcano and was destructed when it violently erupted in 78 CE. A large number of pyroclastic materials, along with volcanic ashes, volcanic blocks and toxic gases were released from this volcano at the time of eruption, which covered the city making it up to 6 meters of thick ash beds killing numerous people.
Answer:
Living conditions in many of the city's tenements did endanger the health of residents. ... of the ideas that would influence the emerging field of public health. ... De Wolf's methods for preventing the spread of contagious disease ... of recently arrived Polish, Greek, Italian, and Eastern European families.
Answer: Charlemagne recieved the title of Emperor, which caused tensions with the Emperor of the East
Explanation:
Shannon most likely uses Laboratory Observation for studying sleep patterns in humans in controlled settings.
Observing the behavior of subjects in a controlled environment is referred to as laboratory observation, as opposed to naturalistic observation. Variable factors in the controlled environment can be controlled, resulting in a limited number of possible responses. The experimental conditions are more tightly controlled. Measuring instruments are frequently easier and more efficient to use.
The Laboratory Observation method has the advantage of allowing you to observe how people or subjects react to a specific object. The laboratories do not need to be sterile. The disadvantage is that you cannot observe their natural reaction as that can be done in naturalistic observation.
Learn more about Laboratory Observation here:
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