If satellites can measure the depth of the sea floor, why is it necessary to make bathymetry soundings from a ship?
a) Multi-beam echo sounders provide information in addition to depth, including the composition of the seafloor
b) The shape of the sea surface as measured by satellites does not exactly mimic the bathymetry of the seafloor
c) Satellites do not actually measure ocean depth
d) Shipboard data is needed to calibrate satellite sea surface height measurements
e) All of the above
E
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When a factory pollutes a river, the costs and losses that affect people downstream would be called ________ costs.
A. Social B. Incidental C. External D. Internal E. Indirect
Some climate feedback loops, such as CO2 weathering feedback, occur over very long time scales
Indicate whether the statement is true or false
What will happen to a negative mass balance glacier?
A. It will advance. B. It will recede. C. It will not move.
The goal of Green Revolution scientists was to develop improved and better
A. irrigation systems. B. non-toxic pesticides. C. high-yield seeds. D. fertilizers.