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Marine Science Exam 4 (11,13,14,15) Questions and Answers
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Marine Science Exam 4 (11,13,14,15) Questions and Answers
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Marine Science Exam 4 (11,13,14,15)Questions and Answers
Increased levels of carbon dioxide in the modern atmosphere are caused by_______.
a. the burning of fossil fuels and deforestation
b. the respiration of increased populations of animals
c. release of carbon dioxide from the oceans to the atmosphere
d. a shift in the pH of the oceans
e. reductions in the plant populations due to the nutrient depletion - Answer -a. the
burning of fossil fuels and deforestation
Atmospheric carbon dioxide levels have increased from about ____ in 1850 to ____ in
the present day. - Answer -280 ppb, 400ppb
Global arming will lead to a rise in mean sea level via ___.
a. thermal expansion of the water
b. increased precipitation
c. melting of polar ice
d. all of the above
e. both A and C - Answer -D. all of the above
Climate models indicate that global warming will raise temperatures______ latitudes.
a. most in tropical
b. most intemperate
c. most in polar
d. approximately equally at all - Answer -c. most in polar
Salt marshes can migrate landward in response to flooding seas, provided that____.
a. the rate of sea level rise does not exceed the rate of vertical accretion of marsh
sediment
b. seawalls are in place to protect the marsh - Answer -a. the rate of sea level rise does
not exceed rate of vertical accretion of marsh sediment
A serious consequence of salt marsh destruction due to the rise of sea level is ___.
a. a greater exposure of the shoreline to storm wave attack
b. deeper landward penetration of storm surge
c. elimination of habitat for fish and shellfish
, d. none of the above
e. all of the above - Answer -e. all of the above
As seawater temperatures rise, the latitudinal range of warm species likely will___.
a. expand
b. contract
c. remain unchanged
d. all of the above
e. none of the above - Answer -a. expand
Rising seawater temperatures will___.
a. harm all marine organisms
b. benefit all marine organisms
c. harm some marine organisms and benefit others.
d. increase suspetibility of some marine organisms to disease
e. c and d - Answer -e. c and d
The thermohaline conveyer belt, if stopped by global warming, would result in_____.
a. hypoxia or anoxia of the deep sea
b. faster warming of sea-surface temperatures
c. mass extinctions of deep-sea fauna
d. more severe winters in Northern Europe
e. all of the above - Answer -e. all of the above
Decreased salinity and density in the North Atlantic could shut down___.
a. Ekman Transport
b. North Atlantic Deep Water Upwelling
c. North Atlantic Deep Water downwelling
d. Southernly flow of the Arctic Intermediate Water
e. None of the above - Answer -B. North Atlantic Deep Water Upwelling
As the extent of the sea-ice cover the Arctic Ocean diminishes,___.
a. exploitation of Arctic resources will accelerate
b. ship transportation
c. polar bears will probably go extinct
d. warming will accelerate
e. all of the above - Answer -e. all of the above
Acidification if the oceans as a consequence of the uptake of atmospheric carbon
dioxide will reduce the ability of ____ to secrete and maintain calcium carbonate shells
or skeletons.
a. foraminifera
b. corals
c. seagrasses
d. coccolithophores
e. a,b, and d - Answer -e. a,b, and d
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