Variations in salinity affect the overall constancy of composition of seawater with respect to major constituents
Oxygen concentrations are lower in the north Pacific compared to the north Atlantic.
The deep oceans are poorly supplied with oxygen by deep water masses formed in polar regions
Elements classified as recycled have concentration profiles resembling those of scavenged elements.
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Other questions in this quiz
2. Which process can be described as "The cellular process by which molecules are oxidized, releasing energy and liberating carbon dioxide as a waste product".
Dissolution
Photosynthesis
Respiration
Recycling
3. If the regression equation, that represents how much absorption increases with increasing concentration (M) is calculated to be y=0.4x-0.01. What is the concentration of a solution with an absorbance of 0.79?
1.845 microM
195 microM
2 microM
0.306 microM
4. In what situation does the rate of production of marine aggregates generally exceed the rate of disaggregation and/or consumption, leading to the occurrence of aggregates at the sea bed?
During seasonal blooms of phytoplankton
During winter periods with low biological activity.
During period of high pressure
During periods of high winds delivering dust to the ocean
5. Why is iron fertilisation a topic of great current interest?
Because it stimulates biological activity in regions with low phytoplankton growth but high nutrients, leading to a high export flux of carbon to the sea floor.
Because it stimulates biological activity in regions with low phytoplankton growth but high nutrients, leading to patches of the ocean that have high magnetism
Because it stimulates biological activity in regions with low phytoplankton growth but high nutrients, leading to a cooling of the surface ocean waters.
Because it stimulates biological activity, which are heavier than normal and so sink rapidly.
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