Europe was the battleground for which wars during the 20th century?

A) World War I and the Cold War, but not World War II
B) World War I, World War II, and the Cold War
C) World War II, but not World War I
D) World War I, but not World War II
E) World War I and World War II, but not the Cold War


B

Environmental & Atmospheric Sciences

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In a deep-water marine food web that includes large populations of phytoplankton, zooplankton, and many species of carnivorous fish, what would happen if the populations of all species of phytoplankton decreased suddenly by 80% and stayed low for

several years? A) The fish and zooplankton populations would decrease. B) The zooplankton populations would decrease but not the fish populations. C) The zooplankton populations would increase but not the fish populations. D) The fish and zooplankton populations would increase.

Environmental & Atmospheric Sciences

The pervasiveness of organized crime and corruption in Russia's political and economic systems waste almost half of its GDP

a. True b. False Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The igneous feature shown in this figure is a



A) dike.
B) sill.
C) volcanic neck.
D) laccolith.

Environmental & Atmospheric Sciences

The age of the oldest ocean floor is approximately: a. 4,000 years

b. 15 billion years. c. 4 billion years. d. 180 million years.

Environmental & Atmospheric Sciences