Climate scientists have concluded that most of the recent warming of Earth is due to ____
A) landmasses concentrated in middle and high latitudes form more ice sheets
B) an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO2
C) an increase in volcanic activity that vents massive quantities of CO2 into the atmosphere
D) variations in the shape of Earth's orbit affects the amount of solar energy received by Earth
B
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a. True b. False
Depletion of soil fertility is a major cause of low per capita food production in Africa.
Answer the following statement true (T) or false (F)
There was an extreme warming of the climate system during the 20th and early 21st centuries.
Answer the following statement true (T) or false (F)
According to the text, internet censorship is the world's most severe in ________
Fill in the blank(s) with correct word