In polar areas
A. as ice forms, water's salinity increases, density increases.
B. as ice melts, water's salinity increases, density increases.
C. as ice melts, water's salinity increases, density decreases.
D. as ice forms, water's salinity decreases, density increases.
Answer: A
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The red dots that coincide with volcanically active island chains shown on the map are called
A) hot spots.
B) midocean ridges.
C) abyssal plains.
D) island arcs.
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Indicate whether the statement is true or false
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