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Marine Science Exam 4 (11,13,14,15) Questions and Answers
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  • Course
  • Marine Science
  • Institution
  • Marine Science

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. reducti...

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  • September 22, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • marine science exam questions and
  • increased levels of carbon dioxide in the modern a

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  • Marine Science
  • Marine Science

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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

Coral reefs will be impacted during the 21st century by____.
a. acidifaction of seawater included higher CO2 concentration
b. bleaching induced by hotter temperatures
c. sea-level rise
d. pollution in the form of excess nutrients and sediments washing off the land
e. all of the above - Answer-e. all of the above

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