Fire and natural disasters, also electronics
Answer:
Water.
Explanation:
When a Tsunami is forming there is a rapid rise and fall in the waters waves.
Answer:
Arousal theory
Explanation:
Arousal theory of motivation that describe the different optimal level of arousal in different people. This is a fundamental process. It contains the attention and the information process in the arousal theory of motivation.
It is been declare that the psychological level of a person will indicate the arousal level of a person in the performance. The study showed that there are adding a single drop of motivation or subtraction in the level of motivation will indicate the positive and the negative effect on performance.
Thus professor Morooka is on arousal level that maintains the optimal level of performance.
During the 14th century, the Black Death became a widespread epidemic primarily because of 2) Chinese overseas exploration. More specifically, the Black Death was spread through the Silk Road, because it started on the plains of Central Asia and was brought back to Europe, where it lived off rats that would go on merchant ships all around the continent. The Black Death massively reduced the European population by up to about sixty percent.