Multiple Choice
A barge loaded with lumber and iron ore floats in a lock by a dam (a closed pool of water like a big swimming pool) .If some of the cargo is thrown overboard,the level of water in the lock will
A) rise.
B) drop.
C) stay the same.
D) rise,provided it is lumber that is thrown overboard.
E) rise,provided it is iron ore that is thrown overboard.
Correct Answer:

Verified
Correct Answer:
Verified
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