How many water masses are common in tropical and temperate latitudes?

a. Three
b. Four
c. Five
d. Six


ANS: C
The water masses present in temperate and tropical waters are named for their relative positions in the
water column. These water masses are surface water, central water, intermediate, deep water, and
bottom water. Information can be found in the section Thermohaline Circulation Affects All the
Ocean's Water.

Environmental & Atmospheric Sciences

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