In which of the following are both compounds effective pain relievers?
A) (R)-ibuprofen and (R)-naproxen
B) (S)-ibuprofen and (S)-naproxen
C) (R)-ibuprofen and (S)-naproxen
D) (S)-ibuprofen and (R)-naproxen
B
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Why is clay poor soil?
A) It doesn't allow sufficient drainage. B) It does not contain organic matter. C) Clay particles pack so tightly there is little air in clay soil. D) all of the above
One of the world's largest cities, Mexico City, is located on one of the least favorable places to build a city
Indicate whether the statement is true or false.
____________________ involves the study and search for minerals and rocks that are economically important. Fill in the blank(s) with the appropriate word(s)
What is essential in the restoration and continuation of photosynthetic productivity in the ocean?
a. Upwelling b. Blooming c. Light d. Carbon dioxide