Judge the following sentence according to the criteria given below: Reef-building corals are able to survive in nutrient-poor tropical waters BECAUSE they receive most of their nutrition from symbiotic zooxanthellae algae
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.
A
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A. Ca+2 B. Na+1 C. Al+3 D. Mg+2 E. all of the above
If a geographer's analysis of a region includes a systematic study of many geographical variables, this is called
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Which air mass appears to predominately influence the humid subtropical region?
A) Maritime equatorial (mE) B) Continental tropical (cT) C) Continental polar (cP) D) Maritime tropical (mT) E) Maritime polar (mP)
Which of the following activities use the greatest amount of water in the United States?
A. electrical generation and industrial B. industrial and irrigation C. industrial and municipal supply D. irrigation and electrical generation E. irrigation and municipal supply