Question 50 Not yet answered Points out of 1.00 Why is the West Antarctic ice sh

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Question 50 Not yet answered Points out of 1.00 Why is the West Antarctic ice sheet particularly susceptible to rapid ice loss? Select one: a. The ozone hole is centered over Antarctica b. The ice sheet is very thin c. Antarctica is warming two times faster than the global average d. The Southern Ocean has strong vertical mixing e, The base of the ice sheet is below sea level Remove flag Question 51 Not yet answered Points out of 1.00 Which of the following is NOT true about El Nino events? Select one: a. A low pressure zone migrates eastward toward Peru b. Fishing along Peru and Ecuador is much better c. The trade winds stop or even reverse d. Upwelling slows or halts offshore of South America e. There is a deeper wedge of warm water off of South America Remove flag Question 52 Not yet answered Points out of 1.00 Longshore drift is caused by: Select one: a. submarine canyons b. seasonal changes in wind strength C. sea level changes d. people building dams and groins e. waves that are not parallel to shore Remove flag

Explanation / Answer

50) The base of the ice sheet is below sea level. As the glaciers retreat they cannot escape the reach of the ocean and warn water will keep melting then even more rapidly hence west Antarctic ice sheet particularly susceptible to rapid ice loss.

51) There is a deeper wedge of warm water off of south america is not true about EL Nino events.

52) The transport of sand and pebbles along the coast is called longshore drift. This drift is caused by seasonal changes in wind strength.  

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