The gas primarily responsible for the greenhouse effect, carbon dioxide, is released by
a. livestock.
b. burning fossil fuels.
c. rising ocean temperatures.
d. desertification.
e. melting permafrost.
B
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The League of Nations failed largely due to its inability to enforce its own rules
Indicate whether this statement is true or false.
Which of the following is a common strategy to "cool down" the effects of inflation?
a. Printing additional money b. Lowering interest rates for lenders c. Increasing government employment d. Removing currency from circulation
In ______, a series of protests and calls for democratic reforms in the twenty-first century led to civil war and the eventual intervention of outside powers, including the United States and Russia, with the two sides often working on the opposite sides of the conflict.
Fill in the blank(s) with the appropriate word(s).
The main focus of the fight on terrorism in the 1970s and 1980s was ______.
a. stopping school shootings b. preventing airplane hijackings c. monitoring cybercrimes d. securing uranium