?A hard-boiled egg sinks in fresh water but floats in salt water because:
A. ?salt water has a greater buoyancy than fresh water.
B. ?the salt water repels the hard-boiled egg making it float.
C. ?the fresh water absorbs into the hard-boiled egg making it sink.
D. ?the salt water repels the egg, making it float, and the fresh water absorbs into the egg, making it sink.
Answer: A
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