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.
Fast-flowing waters of the Humber River, Newfoundland, are a challenge to Atlantic salmon migrating
This is a still image from an animation of ocean surface currents from June 2005 to December 2007
Eastern Cottontail (Sylvilagus floridanus)
Eastern gray squirrel
Peptic ulcer. A peptic ulcer may occur in the stomach (gastric ulcer), as shown here, or in the duod
Observed global land and ocean surface temperature anomalies since 1850