What information was not available for early cartographers to put on charts?
a. Direction of currents
b. Water depths and related information
c. Location of rocks in harbors
d. Sailing times
ANS: B
Early cartographers were able to include information on the directions of currents, position of large
rocks in harbors, and even sailing times. They also included various landmarks that would be helpful
for navigation. Initially these charts did not have water related information like depths because they
were just used to stimulate a sailor's memory of the journey rather than to specifically guide his path.
Information can be found in the section Marine Scientists Use the Logic of Science to Study the Ocean.
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