El Nio
A) did not occur in the 1990s.
B) causes warmer waters in the eastern Pacific Ocean.
C) leads to overall global cooling.
D) has little impact upon weather in the Northern Hemisphere.
E) none of the above
Question 2
The sulfur dioxide from a violent volcanic eruption does all of the following, except
A) remain in the atmosphere for at least a year.
B) stay in the middle to upper layers of the troposphere.
C) transform into sulfuric acid.
D) increase the amount of sunlight reflected back to space.
E) help cool the atmosphere.
Transient killer whales near Unimak Island, eastern Aleutian Islands, Alaska
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
World War II Pacific Theater
Albert Bierstadt, Puget Sound on the Pacific Coast.
The upper waters of the oceans flow horizontally in currents
Major Topographic Divisions of the North Atlantic Ocean