Answer:
The builders planned for the mayors of Ember to pass along a locked box, built to open automatically after 200 years, and successfully passed along until it reached the seventh mayor. Fearing he would soon die from a bad cough, the mayor tried to open the box. He was unsuccessful, and he died before he could return the box to its rightful place so that it might be passed on properly. As a result, the box was not opened after 200 years, and the supplies and plans the builders left behind are beginning to dwindle.
Explanation:
Answer:
Air
Explanation:
A siren is a device that produces sound waves due to the flow of air through a series of holes. It consists of a rotating disk which has series of holes drilled at required distances to one another, and a nozzle through which air flows.
The nozzle is arranged in such a way that it forces air through the holes of the rotating disk, thus producing sound with appropriate frequency.
Sirens are used for security purpose, in ambulances etc.
inscrutable means mysterious, difficult to penetrate, difficult to solve, impenetrable, inscrutable, incomprehensible.
It can be used as an adjective showing a characteristic of what can not be scrutinized; which can not be investigated or understood; incomprehensible, can not be penetrated because it is impenetrable.
That would be an exclamatory sentence.