________ causes neural tube defects.
A. A diet rich in fatty fishes
B. The HbSÂ allele
C. An overproduction of vitamin D
D. The destruction of folate
E. An underproduction of vitamin D
Answer: D
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________ are molecular measures for estimating the time of divergence of living species from a common ancestor
Fill in the blank(s) with correct word
H. erectus was the first species with a cranial capacity approaching H. sapiens
a. True b. False Indicate whether the statement is true or false
All humans were foragers until approximately
A. 12,000 years ago. B. 1,000 years ago. C. 10 million years ago. D. 100,000 years ago. E. 1 million years ago.
________ is NOT a characteristic field technique used by ethnographers.
A. Participant observation B. Conversation C. The interview schedule D. The genealogical method E. The online questionnaire