Buoyancy was provided by huge tanks containing gasoline, which is lighter than seawater. The vessel hung beneath these tanks. Iron weights fixed to the outside of the hull by magnets were used as ballast, causing the bathyscaphe to descend.
Ask not what our country can do for its people but what it's people can do for their country
Considered by many to be one of the finest speeches ever written, Acres of Diamonds offers a multitude of lessons about the rewards of work, education, and finding the riches of life in one's own back yard.
In an era when many Americans would pack public halls to hear speeches given by the greatest citizens of their day, Russell Conwell read his world-famous lecture hundreds of times, and used the income he earned delivering it to found a small seminary to train Baptist ministers. That school soon grew into Temple University, one of the first universities to offer affordable education to working-class Americans: it stands today as the most visible example of Russell Conwell's legacy and vision
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The answer would be A, because the subject has to be what the sentence is talking about which is the drivers.
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This is an assignment you perform in front of other students. You essentially need to make a silent conversation between yourself and the "aliens" to try to figure out what you are saying to each other. That is as much as I can help you with, as I have no way of demonstrating it for you :)
