The huge dust storms that took place in the southern plains of the United States in the 1930s ________
A) were the result of ozone depletion and acid precipitation killing off vegetation
B) were caused by abnormally warm waters in the central Pacific Ocean
C) were triggered by tornados and were worsened by global climate change
D) were the result of a prolonged drought and poor farming techniques
D
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What is a typical output of countries that have just begun to industrialize?
A) automobiles B) petrochemicals C) railroads D) textiles E) waterproof materials
How are stalactites different from stalagmites? Why do they typically form in pairs and often merge to
form a column? What will be an ideal response?
When we exceed a renewable resource's natural replacement rate, the available supply begins to shrink through a process known as ____________________
Fill in the blanks with correct word
Ozone thinning is
A) greatest in the Northern Hemisphere in October. B) greatest in the Southern Hemisphere in April. C) evenly distributed for most of the year. D) more pronounced in Antarctica than the Arctic.