Of the estimated 30,000 plant species that people can eat, only ____ of them supply an estimated 90% of the world's food calories.
A. 3
B. 6
C. 14
D. 42
E. 88
Answer: C
Environmental & Atmospheric Sciences
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A) 2 B) 1 C) 42 D) zero
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A) flounder B) grouper C) mackerel D) shark E) tuna
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Environmental & Atmospheric Sciences