(Q).
Lower temperature and higher salinity yield the densest water.  Will added salt to the pool water. The water is now less dense or more dense?
(A).
more dense


(Q).
So the higher an object is above a surface, the more potential energy it has.  The ball began to raise slowly above the table. The higher it rises above the table, the potential energy will decrease or increase.?
(A).
increase.


(Q).
Developing nations will also increase demands on natural resources as they build more factories.  Compared to an undeveloped patch of Yellowstone national park, would the city of Detroit, which is a highly developed industrial city, consume fewer natural resources? or more natural resources?
(A).
more natural resources