Which of the following pH's corresponds to a highly basic solution?
A) 2.8
B) 6.8
C) 7.2
D) 11.2
D
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Earth's landforms are built up by
A. deposition and plate tectonics. B. weathering. C. erosion. D. infiltration.
Why was corn an important crop in the Inland South during the 19th and early 20th century?
A) It was sold for export to countries with food shortages B) It was used as feed for draft animals that plowed the fields C) It was used to make distilled alcohol sold all over the United States D) It was used to make grits, a staple food.
Humid Continental
What will be an ideal response?
Judge the following sentence according to the criteria given below: The melting of Arctic sea ice by rising temperatures is an example of a positive-feedback loop BECAUSE particulate air pollution has a shading effect
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.