According to the text, what are the features of potatoes？
A. Lower price, quicker growing speed, less land required, and wider range of climate.
B. More calories, quicker growing speed, less labor required in growing and processing, and wider range of climate.
C. More calories, quicker growing speed, less land required, and wider range of climate.
D. More calories, quicker growing speed, less land required, and wider range of products to be made of.
According to Darwin Deleted, Darwin______.
A. holds some responsibility for decline in social morality
B. has deferred the public embrace of evolution
C. emphasizes cooperation over competition
D. contributes little to scientific development
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